Starr Quant Lab Desk Research

A-Share · Pre-Market

A-Share Pre-Market Brief | 2026-07-28 Tuesday

Tue A-Share Pre-Market · 12 tables Asia/Shanghai

Machine-translated from the Chinese original. In case of any discrepancy, the Chinese version prevails.

Single-name entries 17

Show 5 more
13 山东玻纤 605006 C+
玻纤 Unverified
40
只看不买
14 凯盛科技 600552 C+
TGV Unverified
40
只看不买
15 东方精工 002611 C
具身智能 Unverified
33
Pass
16 景旺电子 603228 C
PCB Primary-verified
34
Pass(分支归属推翻)
17 创新医疗 002173 C
脑机接口 Primary-verified
22
Pass(公司自我证伪)

Scores are a subjective ordinal scale; gaps within a band carry no ranking meaning

Time-window note: This report was generated at 07:00–08:30 CST on 2026-07-28 (Tuesday) and serves today's 9:30 open. Primary window = 2026-07-27 15:00 close → 2026-07-28 07:00. This repository already produced a list serving the same open at around 19:30 on 7/27 (reports/a-share/2026-07-27.md). What this report adds relative to that one: ① overnight US equities (Monday's close); ② 东方证券 (Orient Securities, 600958)'s RMB 25.12 billion acquisition of Shanghai Securities (the restructuring draft was disclosed on 7/28); ③ converting the 8 mainline stocks that the previous report marked "○ unverified" into primary-verified.

This report has passed risk-auditor quality control and was reworked accordingly, correcting 3 substantive errors (a mis-attributed source for electronic-cloth prices, a Kinwong gross-margin statement that contradicted the report's own data, and a "three-tier classification" conclusion whose strength exceeded the evidence). The full revision log is in the appendix at the end; please read it — it contains negative disclosure about the strength of this report's own arguments.

Verification tiers (applies throughout):

  • ★ [primary-verified] (8 names): 生益科技 (Shengyi Technology, 600183), 中国巨石 (China Jushi, 600176), 沪电股份 (WUS Printed Circuit, 002463), 景旺电子 (Kinwong Electronic, 603228), 天赐材料 (Tinci Materials, 002709), 神火股份 (Shenhuo Coal & Power, 000933), 东方证券 (Orient Securities, 600958), 创新医疗 (Innovative Medical Management, 002173).
  • △ [secondary-verified] (5 names): 深南电路 (Shennan Circuits, 002916), 中材科技 (Sinoma Science & Technology, 002080), 宏和科技 (Honghe Technology, 603256), 金安国纪 (Goldenmax International, 002636), 兴森科技 (Fastprint Circuit Tech, 002436). Exchange / Sina pre-announcement disclosure pages were checked, but segment structure, cash flow and working-capital quality were all unconfirmed.
  • ○ [unverified]: only news-flow and tape evidence.
  • Hard scoring constraints: for ○ names, "earnings elasticity" ≤8 (≤5 with no pre-announcement), "industry position & fundamentals" ≤10, "expectation gap" = 0; for △ names, "industry position & fundamentals" ≤12, "expectation gap" ≤6 (added in this rework; previously missing).

All quotes in the text are as at the 2026-07-27 close (scraped live from Tencent quotes qt.gtimg.cn) and become invalid once today's session opens.


0. Today in One Sentence

  1. The most important new variable in this window is overnight US equities, and the direction is negative. On Monday the Dow was −0.59%, the Nasdaq −0.05% and the S&P −0.19%, with the Philadelphia Semiconductor Index down more than 2%: SanDisk −8%, SK Hynix −5%, ASML / Western Digital / AMD −4%, Micron −3% (Sina Finance, 21jingji). On the other side, Google +3%, Microsoft +2% and Apple at a record high; China ADRs rose broadly with the Golden Dragon Index +1.5%. "Sell chips, buy software and Chinese assets" — precisely hitting yesterday's strongest A-share line, semiconductors/memory.

  2. Yesterday was day one of an oversold bounce, not a main upleg. Live-pulled data show that most of yesterday's leading AI-materials stocks remain deep in drawdown — 中国巨石 is −46.8% from its 6/26 high, 中材科技 −49.2%, 宏和科技 −47.3%, 兆易创新 (GigaDevice, 603986) −48.7%, 亨通光电 (Hengtong Optic-Electric, 600487) −55.5%, 生益科技 −32.7% (from the 6/25 high of RMB 187.20; measured against the 120-day high of RMB 191.88 it is −34.3%). Last Friday, 7/24, the SSE Composite was still down 1.61% with turnover shrinking to RMB 1.94 trillion.

  3. The catalysts for yesterday's two leading themes were both old news re-fermenting. The brain-computer-interface item, "the world's first cross-regional synchronised EEG collection from a thousand people", was published on July 22 (CLS); CCTV Finance's "high-end PCB prices up more than 300%" was published on July 22–23 (Chinanews). Both have been down-weighted.

  4. This report's greatest value is three primary verifications that overturn the popular narrative: 景旺电子 (Kinwong Electronic, 603228), which hit limit-up yesterday with a RMB 438 million bid queue and the highest relative strength on the board, posted 2026Q1 net profit attributable to parent −28.37% and ex-non-recurring −18.53% — it is on the cost-squeezed side of this price cycle, not a beneficiary; 天赐材料 (Tinci Materials, 002709), treated as a "VC price-hike beneficiary", has only 3,000 tonnes of in-house VC synthesis capacity and a self-supply rate of about 9%~12%, making it a net buyer, and the company has already admitted Q2 profit fell QoQ; 沪电股份 (WUS Printed Circuit, 002463)'s earnings engine is high-speed network switch boards (+109.89%, 43.1% of revenue), with AI servers + HPC at just 15.9%.

  5. But this report's own evidentiary weaknesses must be disclosed at the same time (the QC conclusion): the sole source for "this round of July price increases" (M8/M9 +12~22% etc.) is self-media and has been downgraded to rumour tier; the genuinely checkable price fact is the five rounds of electronic-cloth increases, the last of which was in June; and in the core "three-tier price-hike classification" framework, the third tier has only one sample, Kinwong, where 53% of the profit decline came from shrinking non-recurring items rather than costs. So the only genuinely hard evidence today is one thing: four formal company H1 pre-announcements. Against a backdrop of the SOX falling more than 2% overnight, a hawkish-leaning FOMC, a consecutive-limit-up ladder of only 8 names, and every mainline name's volume ratio below 1, this suits screening branches by earnings evidence and very poorly suits chasing high-level relays.


1. News Overview

Impact level: S = changes an industry trend or delivers direct order elasticity; A = clearly positive for a branch with multiple beneficiaries; B = positive but with a long chain that needs verification; C = sentiment stimulus with weak persistence. in-window = released after 7/27 15:00; out-of-window (carry-over) = before 7/27 15:00, already down-weighted.

# Time In/Out of window Source (with reliability tier) Headline / core Type Branch Level Link
1 07-28 around 04:00 in-window authoritative media US equities Monday close: Dow −0.59% at 51839.26, Nasdaq −0.05% at 25508.07, S&P −0.19% at 7443.28; the SOX fell more than 2%, SanDisk −8%, SK Hynix −5%, ASML / Western Digital / AMD −4%, Micron −3%; Nvidia turned from gain to loss. On the other side: Google +3%, Microsoft +2%, Apple +1% at a record high; China ADRs rose broadly, Golden Dragon Index +1.5% overseas · tape semiconductors/memory (negative); AI software, Chinese assets (positive) A (two-way) Sina21jingji
2 disclosed 07-28 in-window SSE · original restructuring draft 东方证券 (Orient Securities, 600958) will issue shares and pay cash to acquire 100% of Shanghai Securities for a consideration of RMB 25.120 billion (RMB 23.550 billion in shares + RMB 1.570 billion in cash), at an issue price of RMB 10.29/share, issuing 2,288,629,735 shares, equal to 21.22% of the enlarged share capital; no supporting fundraising. The appraisal premium is 24.85% (1.2485x PB). The draft explicitly ticks: this does not constitute a major asset restructuring, does not constitute a backdoor listing, and carries no earnings-compensation undertaking and no impairment-compensation undertaking company · M&A brokers A Draft summaryFull draft (note: the SSE site has anti-scraping checks and a direct connection may return a JS challenge page; this report obtained the original text via a Xueqiu mirror, with filing numbers and figures cross-verified)
3 disclosed 07-28 in-window CNINFO · original interim report 神火股份 (Shenhuo Coal & Power, 000933) interim report: revenue RMB 24.7909 billion (+21.35%), net profit attributable to parent RMB 4.7814 billion (+151.06%), ex-non-recurring RMB 4.7853 billion (+138.07%), weighted ROE 18.41%, operating cash flow RMB 7.200 billion (+62.29%). Non-recurring items total only −RMB 3.934 million; no interim distribution and no bonus issue earnings electrolytic aluminium, coal B (already fully expected) Interim report PDF
4 after the 07-27 close in-window CNINFO · original filing 2026-034 创新医疗 (Innovative Medical Management, 002173) unusual-movement filing (dated 7/28): "Cyber Lingke's AM5 … has not yet generated revenue"; Boling BCI's revenue in 2024 / 2025 / 2026H1 was only RMB 70,100 / RMB 121,900 / RMB 155,000, with operating losses of RMB 8.6641 million / RMB 9.0435 million / RMB 4.7514 million; it simultaneously flagged an H1 pre-announced loss of RMB 48–62 million company · falsification brain-computer interface C (good news exhausted) Filing PDF
5 evening of 07-27 in-window authoritative media relaying a filing A subsidiary of 长芯博创 (Changxin Bochuang, 300548) signed a long-term optical fibre and cable cooperation agreement worth about RMB 4.5 billion (through 2030-12-31), equal to 178% of 2025 revenue. But the filing explicitly uses the net method for revenue recognition (recognising gross profit only) and states it "will not have a material impact on the company's operating results for 2026 or future years" company · orders optical fibre & cable C (self-falsifying) JRJSecurities Times
6 evening of 07-27 in-window Yicai · evening filings round-up 凯盛科技 (Kaisheng Technology, 600552) plans to invest RMB 150 million in a TGV pilot line; 华凯易佰 (Huakai Yibai, 300592) plans to acquire ≥51% of Wanhe Technology (unlisted, no code); 蓝盾光电 (Landun Photoelectron, 300862) is planning to acquire Suzhou Lanchuang Technology and has been suspended; a subsidiary of 普洛药业 (Apeloa Pharmaceutical, 000739) signed a five-year strategic cooperation framework agreement with WuXi Biologics and Duoning Biotechnology company TGV, RF, CDMO B Yicai
7 evening of 07-27 in-window Yicai · evening filings round-up A wave of buybacks: 工业富联 (Foxconn Industrial Internet, 601138) RMB 1–2 billion; 三花智控 (Sanhua Intelligent Controls, 002050) RMB 200–400 million; 科大讯飞 (iFlytek, 002230) RMB 100–200 million; 东山精密 (Dongshan Precision, 002384) has bought back RMB 22.94 million. None specifies cancellation company · governance scattered C (no earnings elasticity) Yicai
8 evening of 07-27 in-window Yicai · evening filings round-up Earnings: 石药创新 (CSPC Innovation, 300765) pre-announced H1 net profit attributable to parent of RMB 1.180–1.360 billion, a swing back to profit; 东方精工 (Dongfang Precision, 002611) net profit attributable to parent RMB 3.846 billion (+867.75%) but revenue −21.68%; 赛诺医疗 (Sino Medical Sciences, 688108) net profit RMB 50.33 million (+263.66%) earnings innovative drugs, other B+ Yicai
9 evening of 07-27 in-window Yicai / Sina Stock Sea Navigator Negatives: ST 恒信 (ST Hengxin) (code not verified by this report) has been placed under CSRC investigation for disclosure violations; 立航科技 (Lihang Technology, 603261) had its order qualification with a specific customer restricted for 6 months, with an estimated revenue reduction of about RMB 50 million; 财达证券 (Caida Securities, 600906)'s major shareholder plans to cut 2%; 嘉必优 (Cabio Biotech, 688089) resumes trading on 7/28 under an "other risk warning" designation regulation · negative scattered C (negative) YicaiStock Sea Navigator
10 disclosed 07-25 out-of-window (recent) SSE · earnings flash 东方证券 (600958) 2026 interim earnings flash: revenue RMB 9.560 billion (+19.49%), net profit attributable to parent RMB 4.518 billion (+30.46%), ex-non-recurring RMB 4.418 billion (+30.94%), weighted ROE 5.50%. Backing out single-quarter Q2 net profit attributable to parent of RMB 2.931 billion (+44.6%) earnings brokers A Flash PDF
11 07-27 daytime out-of-window (carry-over) National Bureau of Statistics (official) January–June profits of nationwide industrial enterprises above designated size were RMB 3,947.99 billion, +18.7% YoY; mining +33.5%, manufacturing +20.1%, electricity/heat/gas/water −4.2%; June alone +15.1%; revenue RMB 69.26 trillion (+6.5%) macro data pro-cyclical, resources A NBS
12 07-27 out-of-window (carry-over) Sina · Trading Must-Read The PBoC will conduct overnight reverse repos of RMB 600 billion daily on 7/29–31 and RMB 300 billion on 8/3; former CSRC vice-chairman Fang Xinghai is under investigation; the Supreme People's Court / Supreme People's Procuratorate judicial interpretation on insider trading takes effect from 7/27 macro · liquidity whole market B Trading Must-Read
13 07-27 all day out-of-window (carry-over) authoritative media 长鑫科技 (ChangXin Technology, 688825) closed its debut +465.82% at RMB 49.00, with turnover above RMB 140 billion, a turnover ratio of 66.40% and a market cap of RMB 3.28 trillion, the largest in the A-share market. But the memory sector "could not be carried along": 兆易创新 (GigaDevice, 603986) −5.03%, 普冉股份 (Puya Semiconductor, 688766) −6.23%, 澜起科技 (Montage Technology, 688008) −3.48% industry · event memory (draining liquidity) S (already priced, direction negative) NBDSina
14 07-22~23 (re-fermenting) out-of-window (carry-over) CCTV Finance → reprinted by Chinanews. ⚠️ the "300%" is one interviewed company's verbal account, not a price index High-end PCB supply falls short of demand; the interviewed company head said "high-speed PCB price increases have already far exceeded three to four times"; order books extend into 2027; the PCB value of a single AI server is "nearly 10 times" that of an ordinary server; 2026 global AI server shipments are expected to exceed 2 million units (+55%) (the original text only says "industry data show", with no institution named) industry · prices PCB, CCL B (downgraded from A) Chinanews
15 from 2025-10 to 2026-06 (key: the last round was in June) out-of-window (carry-over) authoritative media (Securities Times / THS / 21jingji) 7628 electronic cloth quotes: RMB 4.3–4.5/metre on 2025-10-10 → raised to RMB 7.3–7.7/metre on 2026-06-01; five collective price increases were completed between October 2025 and June 2026 (monthly jumps of RMB 0.5/metre from February to May, widening to RMB 0.7/metre in June); a cumulative increase of close to 100% from the low of RMB 3.7–3.9/metre. This breaks the usual seasonal price decline during the summer consumer-electronics off-season prices electronic cloth, fiberglass A (the only primary price chain this report can verify) THS21jingji
16 claims "July" out-of-window (carry-over) ⚠️ self-media (a Weibo entertainment blogger, published 2026-06-27); this report downgrades it to rumour tier, a 0-point source Claims high-end AI CCL M8/M9 +12~22%, FR-4 +8~18%, HVLP copper foil +15~28%, low-dielectric electronic cloth +12~20%, HBM3E/4 +15~30%. The same page also lists 景旺电子 as a "genuine AI-server PCB beneficiary" — already overturned by this report's primary verification, so neither the stock picks nor the data from that source are accepted prices CCL C (rumour, not used as a basis for rating) Source page
17 from 07-06 out-of-window (carry-over) authoritative media (21jingji / Cnyes) Kingboard Laminates issued its sixth price-increase letter of the year, raising FR-4 and PP +15% together, for a cumulative increase of more than 50% year to date prices CCL B+ 21jingji
18 07-22 (re-fermenting) out-of-window (carry-over) CLS / Securities Times A Chinese research team unveiled a new EEG collection device, achieving the world's first cross-regional synchronised EEG signal collection from more than a thousand people industry · technology brain-computer interface B (already down-weighted) CLS
19 07-23/24 out-of-window (carry-over) Baiinfo → Sina VC (vinylene carbonate) rose RMB 20,000/tonne in a single day on 7/23 (+11.11%), and on 7/24 the average price was RMB 200,000/tonne with a high of RMB 230,000/tonne, about 4.89 times the RMB 45,000–47,000/tonne of a year ago; CATL signed a long-term agreement with 永太科技 (Yongtai Technology, 002326) locking in 90,000 tonnes of VC, and BYD took a strategic stake in Xianghe New Energy under 华盛锂电 (Huasheng Lithium Battery, 688353) prices lithium-battery materials B+ (beneficiaries must be screened) Sina
20 pending today's event Caixin The July Politburo meeting is customarily held in the second half of July and had not convened as of 7/27. Institutions expect "strong stimulus is unlikely" policy · expectations whole market B (not yet landed) Caixin
21 7/28–29 today's event Sina / CME The FOMC meeting, with the decision at 02:00 Beijing time on 7/30. CME shows 65.3% for no change in July and 34.7% for a 25bp hike; the September hike probability is about 82% macro · overseas whole market A (risk) Sina
22 today today's event Sina 西安奕材 (ESWIN Material, 688783) unlocks 83.7225 million shares (2.0735% of total share capital); 交运股份 (600676) changes its abbreviated name to "久事动娱 (Jiushi Dongyu)"; the State Council Information Office holds a 7/28 briefing on "15th Five-Year Plan" tax reform event semiconductor materials, fiscal & tax C Sina

7/27 tape (out-of-window · background): SSE Composite +1.15% at 3858.25, SZSE Component +2.72% at 14148.73, ChiNext +3.16% at 3590.79; turnover RMB 2.09 trillion (up RMB 144.2 billion from the prior day, but 长鑫科技 alone traded RMB 141.1 billion, leaving almost zero increment after stripping it out). Nearly 5200 advancers, 121 limit-ups, 5 limit-downs, and only 8 stocks with consecutive limit-ups — an extremely thin ladder (JRJ). The ladder: 8 boards 立新能源 (Lixin Energy, 001258), 珍宝岛 (Zhenbao Island Pharmaceutical, 603567); 4 boards 哈三联 (Harbin Sanlian Pharmaceutical, 002900), 海南海药 (Hainan Haiyao, 000566), 益佰制药 (Yibai Pharmaceutical, 600594); 3 boards 长城军工 (Great Wall Military Industry, 601606), 创新医疗 (002173); 2 boards 银星能源 (Yinxing Energy, 000862), 长缆科技 (Changlan Technology, 002879), 爱丽家居 (Aili Home, 603221).


2. Evidence-Backed Branches, in Descending Order

The ordering reflects evidence hardness and earnings deliverythis window produced no new strong branch. Important adjustment after the rework: Branch 1's strength is cut from S− to A, because the price evidence for "the July price increases" was verified to be self-media (see news #16), and the verifiable price chain only runs to June 2026. Branch 1 is now supported mainly by four formal company pre-announcements, not by price data.

Rank Branch Strength Core evidence Logic hardness Persistence Benefit path Representative stocks (main board first) Key risks
1 CCL / electronic-cloth price hikes (materials end) A Four formal company H1 pre-announcements: Shengyi +117131%, Goldenmax +9361063%, Honghe +280364%, Jushi +6585%; 7628 electronic cloth RMB 4.3 → 7.3–7.7/metre across five rounds (2025/10–2026/6); Kingboard's sixth FR-4 increase of the year +15% Hard on the earnings side (filing grade); the price side only runs to June, and this July round is unverified Medium term, but the companies themselves say capacity is released en masse in 2027 The product itself is going up in price → straight into gross margin (Jushi's segment gross margin 26.9%→52.9% is the empirical proof) 生益科技 (600183), 中国巨石 (600176), 金安国纪 (002636) The evidence for the July round is self-media and has been downgraded to rumour; the last electronic-cloth increase was in June; most names have halved from their June highs; upstream is rising too, so watch the spread, not the price
2 AI computing PCB (manufacturing end) A− WUS H1 +6878%, Shennan +5469%, Fastprint +247~316% (all company pre-announcements) Medium: earnings are hard, but the "price pass-through" layer has no financial evidence Medium term Structural upgrade / higher utilisation (not price increases) 沪电股份 (002463), 深南电路 (002916) The SOX fell more than 2% overnight; WUS's 2026Q1 gross margin showed zero QoQ improvement; WUS's main engine is switch boards (43.1%), not AI servers (15.9%)
3 Broker M&A B+ Orient Securities' restructuring draft disclosed 7/28 plus its own H1 flash net profit attributable to parent +30.46% (earnings-flash grade, hard) Medium (the event is hard, the value creation is doubtful) Event-driven, with approvals measured in quarters Pro-forma total assets of RMB 588.0 billion put it in the top ten 东方证券 (600958) 2026Q1 pro-forma EPS dilution of 15.8%; the pro-forma statements show RMB 4.875 billion of new goodwill with no earnings undertaking or impairment compensation; the Hong Kong whitewash waiver is a single point of veto
4 Resources / electrolytic aluminium earnings delivery B Shenhuo's interim net profit attributable to parent RMB 4.781 billion (+151%) (a formal financial report, the hardest); January–June industrial profits +18.7% and mining +33.5% (NBS) Hard (already realised) Weak-ish (price-driven) The scissors gap between aluminium +19.96% and alumina −11.5% 神火股份 (000933) On 7/10 it already pre-announced an exact RMB 4.8 billion, and the actual came in 0.4% lower; no interim dividend; the SHFE aluminium Q3 average has already fallen 5.6% from Q2
5 Electrolyte (the LiPF6 spread, not VC) B Tinci H1 +907~1020% (company pre-announcement); VC RMB 200,000/tonne (Baiinfo) Medium, but the market has the benefit path backwards Medium The driver is the lithium hexafluorophosphate spread, not VC 天赐材料 (002709) Tinci's VC self-supply rate is only 9~12%; it is a net buyer; the company has already admitted Q2 profit fell 18.6~36.8% QoQ; 2026Q1 operating cash flow −RMB 21 million
6 Fiberglass (the non-electronic-cloth part) B− Fiberglass volumes and prices rising together Medium Medium Roving price increases 中材科技 (002080), 山东玻纤 (Shandong Fiberglass, 605006) Sinoma Science & Technology issued no H1 pre-announcement this year (it issued +80~124% in the year-earlier period) → implied growth <50%
7 Brain-computer interface C The 7/22 thousand-person synchronised EEG collection (re-fermenting) Soft Weak Pure concept mapping No hard main-board name The leader, Innovative Medical Management, filed itself that it "has not yet generated revenue" plus an H1 pre-announced loss widening 322~446%
8 Memory / the ChangXin chain C Already priced and negative Weak The sector "could not be carried along" yesterday; the overnight US memory chain kept selling off

⚠️ On the "three-tier price-hike classification" — downgraded to a hypothesis to be verified, no longer a core conclusion

The first draft wrote "materials end benefits / PCB makers that can pass costs on benefit / PCB makers that cannot are hurt" as "this report's core conclusion". On QC, the evidence is not strong enough to support that assertion, so it is downgraded and its defects disclosed:

  • Tier two (able to pass on) cannot be falsified: using WUS's 2026Q1 (January–March) gross margin to test July price increases is a timing mismatch — the July round physically cannot appear in Q1 statements. A flat QoQ Q1 gross margin only shows "no price pass-through as of Q1"; it cannot prove "able to pass on".
  • Tier three (hurt) has only 1 sample, and that sample is contaminated: only Kinwong Electronic, only one quarter; and back-calculation shows 53% of its decline in net profit attributable to parent came from shrinking non-recurring items (government grants etc.), unrelated to CCL costs (see Section 5 ⑨).
  • Tier one is not internally consistent either: Shengyi Technology itself has to buy electronic cloth and copper foil (its own pre-announcement mentions "rising raw-material prices"), so merging fiberglass / electronic cloth (the true upstream) with CCL (midstream) under "the materials end" is over-aggregation.
  • The first testable node: the segment gross margins in the August 2026 interim reports (Shengyi 8/15, Kinwong 8/22, Jushi and WUS in late August). Until then, the framework is only a hypothesis.

3. Overall Stock-Level Catalyst-Strength Ranking

"Main board": ✅ = Shanghai/Shenzhen main board; ❌ = ChiNext / STAR Market / BSE (observation only, no primary recommendation). "Verification": ★ / △ / ○; the scoring constraints are in the header. This table does not disclose the 8-dimension score breakdown name by name — a known defect of this report, so the totals should be used only as a rough ordering and are not auditable.

Rank Code Name Main board Verification Branch Level Total Core evidence Directness of benefit Fundamentals / industry position Expectation gap Technical sentiment (7/27) Key risks Conclusion
1 600183 生益科技 (Shengyi Technology) CCL A+ 74 Company filing: H1 pre-announced net profit attributable to parent RMB 3.099–3.298 billion (+117~131%), ex-non-recurring +97~112% (7/13, filing 2026-043); single-quarter Q2 implied RMB 1.941–2.140 billion, +68~85% QoQ Direct Single-quarter gross margin 21.27%→28.10%, up for five quarters; net margin 14.23%, a record high; 2025 operating cash flow / net profit attributable to parent 1.58x; gearing 44.03%; receivables +28.5% and inventories +18.7%, both slower than revenue +45.1% Low: the stock is −6.3% since the 7/13 pre-announcement +6.13%, no limit-up; turnover ratio 2.39%; volume ratio 0.74; market cap RMB 306.0 billion PE (TTM) 77.9x (about 54x once H1 lands); −32.7% from the 6/25 high; the July price increases are not in the accounts and the price evidence itself is doubtful; 58% of the 2025 gross-profit increase actually came from PCB, not CCL; unlocks / share reductions / pledges not screened priority deep-dive
2 600176 中国巨石 (China Jushi) electronic cloth / fiberglass A+ 72 Company filing: H1 pre-announced net profit attributable to parent RMB 2.784–3.121 billion (+65~85%) (7/15, filing 2026-055); single-quarter Q2 RMB 1.517–1.854 billion, accelerating QoQ Direct Electronic yarn and cloth segment gross margin 26.9%→52.9%, contributing 33.1% of gross profit on 24.3% of revenue and 70% of the gross-profit increase; single-quarter gross margin 39.64% (the highest in three years); gearing 38.93% (a ten-year low) Medium-to-negative: the company itself says it "has no direct business dealings with AI server or optical-module companies" Limit-up +9.99%, bid queue RMB 416 million (cross-verified); turnover ratio 5.81%; market cap RMB 164.4 billion −46.8% from the 6/26 high; 2026Q1 operating cash flow / net profit attributable to parent only 0.17x, receivables +66%; roving is still 74.8% of revenue; the company warns that RMB 13.38 billion of industry investment is released en masse in 2027; unlocks / share reductions / pledges not screened priority deep-dive
3 002463 沪电股份 (WUS Printed Circuit) AI computing PCB A 66 Company filing: H1 pre-announced net profit attributable to parent RMB 2.830–3.000 billion (+68.17~78.28%), ex-non-recurring +66.08~75.20% (7/14); Q2 implied RMB 1.588–1.758 billion (+73~91%); the Thai subsidiary turned profitable in single-quarter Q2 Direct, but the landing point is misread: the main engine is high-speed network switch boards at RMB 8.169 billion (+109.89%, 43.1% of revenue); AI servers + HPC are only RMB 3.006 billion (15.9%) First tier in high-layer-count communications boards; exports are 82.0% of core revenue; 2026Q1 revenue +53.9%, net profit attributable to parent +62.9%; ROE (2025) 28.57% Low: PE (TTM) 52.6x is in the 96th percentile of the past 5 years and the 90th percentile of the past 10 years +4.71%, no limit-up; turnover ratio 2.40%; volume ratio 0.64 The SOX fell more than 2% overnight; Q1 gross margin 35.63% vs 2025Q4 35.66%, flat QoQ → zero evidence of price pass-through; Q1 operating cash flow / net profit plunged to 0.41 (1.86 a year earlier), capex RMB 1.467 billion > OCF RMB 511 million, single-quarter interest-bearing debt +RMB 1.8 billion and gearing up to 48.64%; the top five customers are 53.32% and the largest supplier 22.28%; the RMB 3.6 billion AI expansion project was only 1.51% invested as at end-2025; unlocks / share reductions / pledges not screened watch closely
4 002916 深南电路 (Shennan Circuits) PCB / packaging substrates A− 65 Company filing: H1 pre-announced net profit attributable to parent RMB 2.100–2.300 billion (+54.41~69.12%) (7/13); attributed to "seizing opportunities in the memory market and computing upgrades plus capacity release at the Guangzhou plant" Direct Dual main businesses in PCB and packaging substrates; PE (TTM) 66.24x, PB 14.63x; market cap RMB 240.8 billion. △: segment structure and cash flow unverified Low (△ names capped at 6) +6.20%, no limit-up; turnover ratio only 1.51%; volume ratio 0.82 The company itself lists the "memory market" as its first driver, while the overnight US memory chain is selling off collectively; −18.6% over 20 days, −27.1% from the high; unlocks / share reductions / pledges not screened watch closely
5 002636 金安国纪 (Goldenmax International) CCL A 64 Company filing: H1 pre-announced net profit attributable to parent RMB 730–820 million (+935.75~1063.45%) (7/13); single-quarter Q2 RMB 528–618 million, +161~206% QoQ; attributed to "CCL and prepreg demand exceeding supply, with volumes up and prices rising" Most direct A second-tier CCL maker; 2026 Q1 margins were reported to have caught up with Shengyi; PE (TTM) 96.75x, PB 12.45x; market cap RMB 46.4 billion. △: financials not primary-verified, so this item is capped at 12 pts Cut per the model: the stock is −44.6% in the 20 days since the pre-announcement (7/13), which under the Section 4 model's "share price falls after a pre-announcement" scores ≤4 pts (the first draft wrongly judged it "slightly positive", a double standard versus Shengyi; corrected) Limit-up +10.00%; turnover ratio 5.53% The growth rate contains an obvious low base; whether it can break through on high-end M9 grades is undecided; PB 12.45x is not cheap; as a △ name, its fundamentals carry overestimation risk; unlocks / share reductions / pledges not screened watch closely (not a priority deep-dive)
6 603256 宏和科技 (Honghe Technology) electronic cloth A 62 Company filing: H1 pre-announced net profit attributable to parent RMB 332–405 million (+280~364%), ex-non-recurring +294~381% (7/14); attributed to "higher selling prices for electronic cloth products" plus a mix shift to specialty / ultra-thin / extra-thin cloth Most direct (pure electronic cloth, the cleanest attribution) △: financials not primary-verified Medium (△ capped at 6) Limit-up +10.00%; turnover ratio 2.54%; volume ratio 1.52 Extreme valuation: PE (TTM) 466x, PB 53.52x, a market cap of RMB 145.0 billion vs H1 profit of RMB 370 million (the annualised forward PE is still close to 180x); −47.3% from the high watch only (extreme valuation)
7 000933 神火股份 (Shenhuo Coal & Power) electrolytic aluminium B+ 62 A formal interim report (the hardest): net profit attributable to parent RMB 4.781 billion (+151.06%), ex-non-recurring RMB 4.785 billion; non-recurring items only −RMB 3.93 million; operating cash flow RMB 7.200 billion = 1.51x net profit attributable to parent, cash-collection ratio 1.09 Direct (already realised) 1.7 million tonnes of electrolytic aluminium; single-quarter gross margin 38.87%; gearing 42.32%; net interest-bearing debt −RMB 628 million; PE (TTM) 8.28x, PB 2.06x, dividend yield 3.16% Negative: on 7/10 it already pre-announced an exact RMB 4.800 billion; the actual RMB 4.781 billion was 0.4% lower +1.48%; turnover ratio 2.23% No interim dividend; minority interests take 21.3% of profit; the 900,000 tonnes in Yunnan use grid power, not captive power; the SHFE aluminium Q3 average is already −5.6% versus Q2; shareholder Shangqiu Putian's reduction window runs to 8/13 watch only
8 600958 东方证券 (Orient Securities) broker M&A B+ 60 The original SSE draft plus the earnings flash: RMB 25.12 billion to acquire 100% of Shanghai Securities; its own H1 flash net profit attributable to parent RMB 4.518 billion (+30.46%), single-quarter Q2 +44.6% Event-direct PB 0.905x (below book), PE (TTM) 11.53x; pro-forma total assets RMB 588.0 billion, pro-forma net profit attributable to parent RMB 6.996 billion; the issue price of RMB 10.29 is 13.3% above the market price, and BVPS rises marginally by 0.70% (9.98→10.05) Medium-to-positive: turnover ratio only 0.76%, so the market has not priced it +2.48%; turnover ratio 0.76% (the coldest on the list); −2.2% over 20 days, −17.7% from the high 2026Q1 pro-forma EPS dilution of 15.8% (0.19→0.16); the pro-forma statements show RMB 4.875 billion of new goodwill, and the draft explicitly has no earnings undertaking and no impairment compensation; it is buying an asset at 1.2485x PB / 19x PE with its own 0.91x PB valuation; the target's 2026Q1 proprietary trading lost RMB 88 million, with an annualised ROE of only about 3.0%; the Hong Kong whitewash waiver plus independent shareholder approval is a single point of veto; ROE 6.81%→6.60% watch closely
9 002709 天赐材料 (Tinci Materials) electrolyte B 54 Company filing plus the original IR minutes: H1 pre-announced net profit attributable to parent RMB 2.7–3.0 billion (+907.84~1019.82%) (7/10); electrolyte shipments +40% A reverse correction: VC is a cost, not revenue — in-house VC synthesis capacity is only 3,000 tonnes/year (a further 12,000 tonnes is purification capacity requiring purchased crude), against annual demand of about 24,000–32,000 tonnes, so the self-supply rate is about 9~12% and it is a net buyer No. 1 in electrolyte in China, with 2025 sales above 720,000 tonnes (+44%); gearing 35.56%, close to net cash; PE (TTM) 27.23x Negative: the day after the pre-announcement (7/13) it fell 7.16% +3.96%, no limit-up; turnover ratio 5.22% The company's 7/10 IR text admits "profit declined QoQ in the second quarter", implying single-quarter Q2 of RMB 1.046–1.346 billion, −18.6~36.8% QoQ; 2026Q1 operating cash flow −RMB 21 million vs net profit attributable to parent RMB 1.654 billion; every RMB 10,000/tonne rise in VC adds RMB 210–290 million of annualised cost; expansions announced during 2026 total about RMB 5.310 billion watch only (direction corrected)
10 002080 中材科技 (Sinoma Science & Technology) fiberglass B 52 2026Q1 net profit RMB 507 million (+40.15%); Taishan Fiberglass 2025 net profit RMB 1.05 billion (+187%) Indirect (diluted by diversification) A three-way structure of fiberglass + wind blades + lithium separators; PE 44.40x, PB 4.42x Negative: no H1 pre-announcement this year (it issued +80.77~123.81% in the year-earlier period) → implied H1 change <50% Limit-up +10.00%; turnover ratio 2.73% The weakest earnings link in the fiberglass branch; −49.2% from the high watch only
11 002436 兴森科技 (Fastprint Circuit Tech) PCB / substrates B 51 Company filing: H1 pre-announced net profit attributable to parent RMB 100–120 million (+246.83~316.19%) (7/15) Medium (the substrate angle) Pre-announced losses in both 2024 and 2025, so this is a low-base swing to profit; PE (TTM) 420.45x (TTM has turned positive at about RMB 144 million), PB 11.48x; market cap RMB 60.7 billion Medium (△ capped at 6) +5.62%; turnover ratio 8.52% Absolute profit is only around RMB 100 million vs a RMB 60.7 billion market cap; two straight loss years (revenue far above RMB 300 million and net assets positive, so no risk-warning designation is triggered); −35.1% from the high watch only
12 000823 超声电子 (Ultrasonic Electronics) PCB B− 44 Tape action plus branch attribution only Unproven (no evidence it makes AI boards) PB only 1.73x and PE 37.87x, the lowest valuation in the branch; market cap RMB 8.1 billion. An ○ name, fundamentals unverified Scores 0 +4.29%, no limit-up −47.6% over 20 days, −54.3% from the high; it sits in mid- and low-end PCB, so if the "cannot pass on" hypothesis holds it should be on the losing side — this report does not treat it as a positive name in Branch 2 observe only (low valuation, logic unproven)
13 605006 山东玻纤 (Shandong Fiberglass) fiberglass C+ 40 Tape action only Medium PE (TTM) −756 (loss-making), PB 3.04x Scores 0 Limit-up +9.99% A loss-making stock hitting limit-up; −47.0% from the high watch only
14 600552 凯盛科技 (Kaisheng Technology) TGV C+ 40 RMB 150 million invested in a TGV pilot line (filing) The earliest stage of an industry trend PE (TTM) 116.64x, PB 3.63x Scores 0 +5.40%; turnover ratio 6.35% RMB 150 million is only about 2.6% of 2025 revenue; the previous report verified that the company twice filed that "TGV has not generated any operating revenue" watch only
15 002611 东方精工 (Dongfang Precision) embodied intelligence C 33 Interim net profit attributable to parent RMB 3.846 billion (+867.75%) Numbers trap Revenue −21.68%, with the profit mainly a one-off disposal gain from selling Fosber Negative +5.74% Putting +868% alongside Shenhuo's +151% and calling both an "earnings explosion" is a serious comparability error Pass
16 603228 景旺电子 (Kinwong Electronic) PCB C 34 Limit-up on 7/27 with a RMB 438 million bid queue Slightly negative (but attribution needs care; see Section 5 ⑨) 2026Q1 net profit attributable to parent RMB 233 million (−28.37%), ex-non-recurring RMB 189 million (−18.53%); the latest single-quarter gross margin fell 2.80pct QoQ to 18.76% (the previous four quarters oscillated between 21% and 22%); automotive electronics is 45.4% of revenue, with communications and data infrastructure only 10.4% (2025) / 15.6% (Jan–Apr 2026); HDI gross margin 20.8%→12.2%; gearing 46.77%, FCF persistently negative, long-term borrowings from RMB 284 million to RMB 3.444 billion Strongly negative: it did not appear on the 7/13 list of 15 PCB-chain companies with collectively positive pre-announcements; still no H1 pre-announcement Limit-up +10.00%, bid queue RMB 438 million; the highest relative strength on the board (only −8.7% from the high, +19.6% over 20 days) PE (TTM) 71.1x / 82.8x ex-non-recurring for a company whose ex-non-recurring profit is −18.5%; its AI-server HDI is only "certified, expected to supply", with no customer name and no order value; a pending Hong Kong IPO carries dilution Pass (branch attribution overturned)
17 002173 创新医疗 (Innovative Medical Management) brain-computer interface C 22 The filing's own words: "no revenue has been generated so far" Pure concept (the very bottom) Its main business is private hospitals in Qiqihar; Boling BCI's 2026H1 revenue was RMB 155,000 (0.045% of the total) with a loss of RMB 4.7514 million; 2026Q1 gross margin 2.48% (gross profit of RMB 4.14 million < administrative expenses of RMB 22.29 million); eight straight loss years totalling −RMB 1.804 billion Strongly negative 2 limit-ups in 3 days (7/24 was only +0.27%, not consecutive); turnover ratio 10.04% In September 2025 the company itself acquired 100% of Boling BCI in a cash deal priced at RMB 100 million; the market now assigns a premium to net assets of RMB 7.405 billion = 74 times; AM5 is a Class II certificate from the Zhejiang provincial drug administration (an upper-limb exoskeleton rehabilitation device), not a non-invasive BCI; the buyback price cap of RMB 20 < the current price of RMB 20.69 → the floor has mechanically failed; the actual controller received a warning letter on 5/28 Pass (self-falsified by the company)

Three names removed from the overall ranking during the rework (their basis for inclusion was negated by their own risk column; moved to the Section 6 Pass list): 亨通光电 (Hengtong Optic-Electric, 600487) (its inclusion rationale was "spillover from Changxin Bochuang's RMB 4.5 billion contract", yet that contract is confirmed by filing not to affect earnings), 南京熊猫 (Nanjing Panda Electronics, 600775) (its "core news" was actually a tape limit-up, not a news source), 深科技 (Shenzhen Kaifa, 000021) (financials entirely unverified, and the memory chain sold off overnight).

Observation zone (not main board; no primary recommendation per the iron rules)

Code Name Board Branch Note
688825 长鑫科技 (ChangXin Technology) STAR Market memory Debut +465.82%, turnover RMB 141.1 billion, market cap RMB 3.28 trillion, the largest in the A-share market. The master sentiment valve of the semiconductor branch, and also the biggest drain on liquidity
300765 石药创新 (CSPC Innovation) ChiNext innovative drugs The hardest stock-level fundamental news in this window: H1 pre-announced net profit attributable to parent of RMB 1.180–1.360 billion, a swing back to profit. It fell −1.30% against the trend on 7/27, so the filing is not yet reflected
688183 生益电子 (Shengyi Electronics) STAR Market PCB 59.85% held by Shengyi Technology; 2026Q1 revenue RMB 2.411 billion (+52.6%), net profit attributable to parent RMB 445 million (+122.2%), gross margin 35.21%
688519 南亚新材 (Nanya New Material) STAR Market CCL +7.22%, PE 152.70x, PB 20.03x
300476 胜宏科技 (Victory Giant Technology) ChiNext AI PCB +3.76%, PE 50.12x, market cap RMB 234.6 billion
301526 国际复材 (International Composite Materials) ChiNext fiberglass 20CM limit-up, turnover ratio 16.06%, PE 237.34x
300196 长海股份 (Changhai Composite Materials) ChiNext fiberglass +7.44%, PE 21.41x, PB 1.49x, the lowest valuation in the entire fiberglass chain, but −50.3% from the high
688353 华盛锂电 (Huasheng Lithium Battery) STAR Market VC additives One of the genuine capacity holders behind the VC price increase (9,000 tonnes of VC plus 30,000 tonnes planned); BYD has taken a strategic stake in its Xianghe New Energy. +5.19%, PE 105.03x
300801 泰和科技 (Taihe Technology) ChiNext VC additives A VC capacity holder (the 10,000-tonne figure comes from media and is unverified). +8.88%, PE 40.85x
300497 富祥股份 (Fuxiang Co) ChiNext VC additives A VC capacity holder. Note: it is often wrongly written as "富祥药业"; the correct securities abbreviation is 富祥股份. +5.99%, PE 2471.85x
002326 永太科技 (Yongtai Technology) Shenzhen main board VC additives CATL has signed a long-term agreement locking in 90,000 tonnes of VC. +8.18%, PE 374.79x
300037 新宙邦 (Capchem) ChiNext electrolyte +3.00%, PE 34.91x
300750 宁德时代 (CATL) ChiNext lithium battery An RMB 20–40 billion buyback for cancellation (different in nature from the "not for cancellation" buybacks on the main board)
300548 长芯博创 (Changxin Bochuang) ChiNext optical fibre & cable A RMB 4.5 billion five-year agreement, but revenue is recognised on the net method and the company says it does not affect earnings
300753 / 301293 爱朋医疗 (Aipeng Medical) / 三博脑科 (Sanbo Brain Hospital) ChiNext brain-computer interface Aipeng hit a 20CM limit-up but has PE −256.61 (loss-making); Sanbo Brain +12.71%, PE 196.50x
688783 西安奕材 (ESWIN Material) STAR Market semiconductor materials 83.7225 million shares unlock today, 2.0735% of total share capital

4. Stock Scoring Model (100 points total)

Rework correction: in the first draft the seven dimensions summed to a maximum of only 95 yet were labelled "100 points total", and the "○ cap of 8" exceeded the stated range of "0–5", so the rules contradicted themselves. A "profit quality" dimension has now been added (this report was already using it in practice, e.g. Shenhuo's non-recurring items and Dongfang Precision's one-off gain) and the range conflict fixed.

Dimension Points Note
News-source authority 0–15 Company filing / exchange disclosure 15; official industry data 12; authoritative media 9; broker research 6; investor-interaction platforms 3; self-media / rumour 0
Directness of the positive 0–20 The product itself raising prices / direct orders 16–20; industry trend 10–15; indirect via supply chain 5–9; pure concept mapping 0–4; beneficiary direction actually inverse 0–6
Earnings elasticity 0–15 A formal pre-announcement with quantifiable growth 11–15; a direction but no numbers 6–10; no pre-announcement 3–5; negative growth 0–2
Industry position & fundamentals 0–15 Referencing SEPA: revenue · net profit · gross margin · cash flow · gearing · barriers · niche leadership
Profit quality 0–5 Ex-non-recurring ≥ net profit attributable to parent with no large one-off gain 4–5; one-off share <30% 2–3; one-off dominated or negative operating cash flow 0–1
Expectation gap 0–10 Fully priced / share price fell after the pre-announcement 0–4; partly priced 5–7; clearly unpriced 8–10
Theme persistence 0–10 Continuity in capacity / orders / prices 7–10; event-driven 3–6; one-day wonder 0–2
A-share trading characteristics 0–10 Main board + good liquidity + not at a high 7–10; main board but at a high 4–6; not main board or poor liquidity 0–3
Risk deduction 0 to −15 Accelerating at a high level, extreme valuation, one-off gains, deteriorating cash flow, share reductions, losses, company self-falsification, etc.

Verification-tier caps: ○ names — earnings elasticity ≤8 (≤5 with no pre-announcement), industry position & fundamentals ≤10, expectation gap = 0; △ names — industry position & fundamentals ≤12, expectation gap ≤6.

Large deductions triggered this period: 创新医疗 (−15, company self-falsification plus a failed buyback floor); 东方证券 (−11, 15.8% EPS dilution plus RMB 4.875 billion of goodwill with no backstop); 景旺电子 (−10, negative ex-non-recurring growth plus branch-attribution mismatch, reduced from the first draft's −12 because the attribution mixes in non-recurring items); 宏和科技 (−9, PE 466x / PB 53.5x); 天赐材料 (−9, inverse benefit direction plus a QoQ Q2 decline plus negative operating cash flow); 神火股份 (−7, the pre-announcement is priced in, no dividend, minority-interest leakage).


5. Detailed Analysis of Key Stocks (Top 7 + two counter-examples)

1生益科技600183the hardest logic, but the good news has already had one run · Shengyi Technology

  • Related news: filing 2026-043 on 2026-07-13, H1 pre-announced net profit attributable to parent RMB 3.099–3.298 billion (+117~131%) and ex-non-recurring RMB 2.719–2.918 billion (+97~112%) (CNR). The interim report is scheduled for 2026-08-15.
  • Positive logic (direct): the pre-announcement's own text has twin engines — "the CCL segment … CCL product revenue and gross profit increased" plus "subsidiary Shengyi Electronics benefited from AI computing and high-speed communications". Note that the company's wording is "higher volumes plus mix optimisation", with no mention of "price increases"; price pass-through is only implied within "gross profit increased".
  • Fundamentals (primary-verified): 2026Q1 revenue RMB 8.141 billion (+45.09%), net profit attributable to parent RMB 1.158 billion (+105.47%). Single-quarter gross margin went from 21.27% (24Q1) to 28.10% (26Q1), rising for five straight quarters; net margin of 14.23% is a record high, with the expense ratio down 1.6pct over the same period. Working capital has not deteriorated: receivables +28.5% and inventories +18.7%, both slower than revenue +45.1%; inventory turnover went from 114 to 95.6 days. Full-year 2025 operating cash flow / net profit attributable to parent was 1.58x. Gearing is 44.03%, with net interest-bearing debt of about RMB 1.3 billion.
  • Structural fact: the 2025 profit surge was driven mainly by PCB (Shengyi Electronics), not CCL — of the segment gross-profit increase, PCB was 58% and CCL only 35%. The structure had already reversed by 2026Q1, with about 75% of the increase in net profit attributable to parent coming from CCL and others.
  • Industry position: on Prismark's basis it ranked second globally in rigid CCL sales for 12 consecutive years from 2013 to 2024, with a 13.7% share in 2024. That figure was not obtained from a primary Prismark ranking; it is the company's disclosed basis as relayed by media. There is no reliable data on its share in the ultra-low-loss M7/M8/M9 niches.
  • Technical sentiment: +6.13% at RMB 125.99, no limit-up, turnover ratio 2.39%, volume ratio only 0.74. Down 29.4% over the past month and −32.7% from the 6/25 high of RMB 187.20; −6.3% since the strong pre-announcement on 7/13.
  • Valuation: PE (TTM) 77.9x; replacing 2025H1 (about RMB 1.428 billion) with the 2026H1 midpoint (about RMB 3.199 billion) gives TTM ≈ RMB 5.7 billion, implying PE ≈ 54x (the first draft wrote "about 60x", an arithmetic error, now corrected).
  • Final judgement: priority deep-dive. Its financial quality stands up best to scrutiny. But a strong pre-announcement failed to lift the stock, which shows expectations are already priced ahead of the accounts; and the pre-announcement itself mentions "rising raw-material prices" — what matters is the spread, not the price.

2中国巨石600176the cleanest empirical proof of price pass-through, but a basis gap versus the "AI narrative" · China Jushi

  • Related news: filing 2026-055 on 2026-07-15, H1 pre-announced net profit attributable to parent RMB 2.7836–3.1210 billion (+65~85%). Backing out single-quarter Q2 net profit attributable to parent of RMB 1.517–1.854 billion (Q1 was RMB 1.267 billion), accelerating QoQ.
  • Positive logic (direct): the segment data are the cleanest evidence of this price cycle — the electronic yarn and electronic cloth segment's gross margin went from 26.9% in 2025Q1 to 52.9% in 2026Q1 (+26pct), while roving only went from 30.2% to 33.9%. That segment contributed 33.1% of gross profit on 24.3% of revenue, delivering RMB 453 million (70%) of the RMB 645 million YoY gross-profit increase.
  • Fundamentals (primary-verified): 2026Q1 revenue RMB 5.282 billion (+17.93%), net profit attributable to parent RMB 1.267 billion (+73.48%); single-quarter gross margin 39.64%, net margin 24.88%. Revenue +17.9% produced net profit attributable to parent +73.5%, operating leverage of 4.1x. Gearing 38.93%, inventory turnover from 148 to 98.6 days.
  • Two risks that must be flagged:
    1. 2026Q1 operating cash flow / net profit attributable to parent was only 0.17x (1.28x for full-year 2025), with receivables going from RMB 1.891 billion at end-2025 to RMB 3.143 billion (+66%). Whether this is channel stuffing or normal volume growth can only be judged from the interim report (August).
    2. Basis gap: the original text of the company's 2026-05-29 investor-survey minutes reads: "the company currently has no direct business dealings with AI server or optical-module companies"; new capacity is "mainly thin-cloth series products".
  • Capacity and cycle: new electronic-cloth plans of 3.2 + 2.5 = 570 million metres (+54% relative to 2025 sales volume), each with a 1.5-year construction period, so output only arrives in 2027H2–2028. The company's own annual report warns: "industry investment in specialty electronic fiberglass projects under construction or planned has now reached a cumulative RMB 13.38 billion, with capacity expected to be released en masse in 2027".
  • Technical sentiment: limit-up +9.99% at RMB 41.07 with a RMB 416 million bid queue (cross-verified against the level-one bid), turnover ratio 5.81%. But the intraday high on 6/26 was RMB 77.20 (a market cap of RMB 309.0 billion) and it closed at RMB 37.34 on 7/24 (RMB 149.5 billion), a maximum drawdown of 51.6% — yesterday's limit-up was a bounce off a deep decline.
  • Final judgement: priority deep-dive. Understand it as a "fiberglass cyclical", not an "AI computing stock" — the elasticity window is most likely 2026, with a supply shock in 2027.

3沪电股份002463the earnings are real, but the market has misidentified its main engine · WUS Printed Circuit

  • Related news: the 2026-07-14 pre-announcement, H1 net profit attributable to parent RMB 2.830–3.000 billion (+68.17~78.28%) and ex-non-recurring RMB 2.730–2.880 billion. Backing out single-quarter Q2 net profit attributable to parent of RMB 1.588–1.758 billion, +7391% YoY and +2842% QoQ, accelerating further from Q1 (+62.9%). The Thai subsidiary turned profitable in single-quarter 2026Q2.
  • [Core correction] the main engine is AI networking, not AI servers. From the 2025 annual report by application area (the original text primary-verified):
    • Data communications total RMB 14.656 billion, 77.4% of revenue, +45.21%
      • High-speed network switches and associated routers RMB 8.169 billion, 43.1%, +109.89%the fastest-growing and largest
      • AI servers and HPC only RMB 3.006 billion, 15.9%
      • General servers RMB 2.540 billion (13.4%), wireless communications and other RMB 941 million (5.0%)
    • Smart vehicles RMB 3.045 billion (16.1%), +26.41%, but with gross margin −1.61pct YoYThe elasticity from "a large rise in AI-server PCB value content" maps onto less than 16% of WUS's revenue base. (Note: the widely circulated "US$35,100 → US$116,700 per unit / +233%" was verified to be on a Rubin-architecture full rack basis rather than per unit, and no verifiable primary broker report could be found, so this report does not use it as evidence.)
  • [Second correction] "price increases" still have zero evidence in WUS's accounts: 2026Q1 gross margin 35.63% vs 2025Q4 35.66%, flat QoQ (the +2.88pct YoY came from product mix and scale effects). The company has issued no price-increase announcement, while its largest single supplier accounts for 22.28% of purchases and the top five for 42.16% — an asymmetric bargaining position.
  • Cash flow and balance sheet (needs caution): 2026Q1 operating cash flow of RMB 511 million vs net profit attributable to parent of RMB 1.242 billion, so net-profit-to-cash conversion plunged to 0.41 (1.86 a year earlier); receivables +17.6% QoQ and inventories +15.7% QoQ, both faster than revenue +14.4% QoQ. Capex of RMB 1.467 billion > operating cash flow of RMB 511 million, with the gap covered by net financing inflows of RMB 1.991 billion; single-quarter interest-bearing debt rose about RMB 1.8 billion and gearing went from 46.46% to 48.64%.
  • Capacity cadence: the RMB 3.6 billion "high-end PCB expansion for AI chips" project was only 1.51% invested as at end-2025, with trial production expected in the second half of 2026. In other words, essentially all of the 2026H1 high growth came from mix upgrades and utilisation on existing capacity.
  • Valuation and position: PE (TTM) 52.6x, in the 96th percentile of the past 5 years and the 90th percentile of the past 10 years; PB 13.5x. −24.2% from the 2026-06-25 high of RMB 154.99 (−25.7% measured against the 120-day high). Note: the first draft's claim that it had "the smallest drawdown among the mainline names" was wrong — Kinwong at −8.7% and Orient Securities at −17.7% are both smaller; that statement has been deleted.
  • Technical sentiment: +4.71% at RMB 117.50, no limit-up, turnover ratio 2.40%, volume ratio 0.64.
  • Final judgement: watch closely (the first draft listed it as a "priority deep-dive"; downgraded after primary verification). Earnings growth is real and accelerating, and the Thai turnaround is a genuine marginal improvement; but the main engine is misidentified by the market, price pass-through has no financial evidence, cash flow is weakening markedly during the expansion phase, and the valuation is in the 96th percentile of the past 5 years — with all four stacked, the risk-reward is worse than Shengyi Technology and China Jushi.

4深南电路002916good earnings, but an overnight negative is hidden in the attribution · Shennan Circuits

  • Related news: the 2026-07-13 pre-announcement of H1 net profit attributable to parent RMB 2.100–2.300 billion (+54.41~69.12%). Attributed to "rapid AI development, with the company seizing opportunities in the memory market and computing upgrades, plus capacity release at the Guangzhou plant".
  • Key note: the company itself lists the "memory market" as its first driver, while the overnight US memory chain is selling off collectively (SanDisk −8%, SK Hynix −5%, Micron −3%), and yesterday the A-share memory chain already "could not be carried along" (GigaDevice −5.03%, Puya Semiconductor −6.23%). This is the only name in the branch whose attribution collides directly with the overnight negative.
  • Fundamentals: PE (TTM) 66.24x, PB 14.63x, market cap RMB 240.8 billion. A △ name: segment structure, cash flow and working capital all unverified.
  • Technical sentiment: +6.20% at RMB 353.44, no limit-up, turnover ratio only 1.51%; −18.6% over 20 days, −27.1% from the high.
  • Final judgement: watch closely.

5金安国纪002636the biggest elasticity and the deepest oversold, but the thinnest verification · Goldenmax International

  • Related news: the 2026-07-13 pre-announcement of H1 net profit attributable to parent of RMB 730–820 million, +935.75%~1063.45%; Q1 was RMB 202 million, so single-quarter Q2 backs out to RMB 528–618 million, +161~206% QoQ. The company attributes this to "CCL and prepreg demand exceeding supply, with sales volumes up YoY and selling prices continuing to rise, lifting gross margin" (CLS, Securities Times).
  • Positive logic (most direct): its attribution wording is the purest of the four — "volumes up + prices up → gross margin up", with no other business diluting it.
  • The scoring problem corrected in the rework: the first draft judged its "expectation gap" as "slightly positive" (about 8 pts) on the grounds of a −44.6% oversold move. But the Section 4 model of this report explicitly states "share price falls after a pre-announcement → 0–4 pts", and Shengyi Technology in the same situation was judged "low expectation gap". That was a double standard; it has been rejudged at ≤4 pts, cutting the total from 70 to 64, dropping it below Shennan in the ordering and downgrading it from the Top 5 recommendations to "watch closely (not a priority deep-dive)".
  • Fundamentals: PE (TTM) 96.75x, PB 12.45x, market cap RMB 46.4 billion. A △ name, so this item is capped at 12 pts — its cash flow, working capital and segment structure are all unverified, carrying overestimation risk.
  • Technical sentiment: limit-up +10.00% at RMB 63.69, turnover ratio 5.53%; −44.6% over 20 days, −48.8% from the high.
  • Risks: the growth rate contains an obvious low-base component; as a second-tier maker, whether it can break through on high-end grades such as M9 is undecided; PB 12.45x is no longer cheap.
  • Final judgement: watch closely. The highest earnings elasticity and the lowest position in the branch, but also the thinnest verification tier among the top names — until primary verification is complete it should not be treated on a par with Shengyi and Jushi.

6神火股份000933the cleanest earnings, but this is a positive that has already been walked through · Shenhuo Coal & Power

  • Related news: the interim report was disclosed on 7/28 — revenue RMB 24.7909 billion (+21.35%), net profit attributable to parent RMB 4.7814 billion (+151.06%), ex-non-recurring RMB 4.7853 billion, weighted ROE 18.41%, operating cash flow RMB 7.200 billion (+62.29%).
  • Profit quality (the highest on the list): non-recurring items total only −RMB 3.934 million, so ex-non-recurring net profit is higher than net profit attributable to parent; no asset impairment was recognised in H1; OCF / net profit attributable to parent 1.51x, cash-collection ratio 1.09; receivables turnover just 9.4 days. Of the RMB 2.877 billion YoY increase in net profit attributable to parent, 96.5% is recurring operating profit.
  • Driver breakdown: the SHFE aluminium 2026H1 average price was RMB 24,325/tonne (+19.96%) and alumina −11.5%. Electrolytic aluminium segment revenue of +20.3% almost exactly matches the aluminium price increase → zero volume growth; 100% is the price scissors gap. Single-quarter gross margin rose to 38.87%.
  • Four deduction facts: ① on 7/10 it already pre-announced an "exact figure" of RMB 4.800 billion, and the actual RMB 4.781 billion was 0.4% lower, so this is not a beat, and the stock had already risen 18.7% in the 18 days after the pre-announcement; ② no interim distribution or bonus issue (it did make a Q3 interim distribution in 2024, showing this is not an institutional obstacle); ③ minority interests take 21.3% of profit, and the fastest-growing unit, Yunnan Shenhuo (+214%), happens to be the least owned (58.25%); ④ the SHFE aluminium average price so far in Q3 is RMB 23,035/tonne, already 5.6% below Q2; the 900,000 tonnes in Yunnan (53% of capacity) use grid power, not captive power, and alumina is mainly purchased externally with no hedge.
  • Valuation: PE (TTM) 8.28x, PB 2.06x, dividend yield 3.16%. But YTD −5.20% and −19.19% over the past 3 months, so the share price and earnings have fully diverged — the market is pricing a "cycle-peak discount", and a low PE is not evidence of cheapness.
  • Final judgement: watch only. Shareholder Shangqiu Putian's reduction window runs to 8/13.

7东方证券600958the only major M&A in this window, but "accretion" is a misreading · Orient Securities

  • Related news: the restructuring draft was disclosed at the SSE on 7/28 (not on the evening of 7/27); it plans to issue shares and pay cash to acquire 100% of Shanghai Securities for a consideration of RMB 25.120 billion at an issue price of RMB 10.29/share (the 120-day average, with no discount), issuing 2,288,629,735 shares, equal to 21.22% of the enlarged share capital, with no supporting fundraising.
  • [Three popular claims that must be corrected]:
    1. It does not constitute a major asset restructuring — the draft's transaction-nature table explicitly ticks "no".
    2. There is no trading suspension today — the suspension was already executed from 2026-04-20 to 05-06, with trading resuming on 05-07; none of the 33 documents disclosed on 7/28 is a suspension/resumption notice.
    3. There is no earnings-compensation undertaking and no impairment-compensation undertaking (the draft explicitly ticks "no"), while the pro-forma statements show new goodwill of RMB 4,875.4599 million (RMB 4.875 billion) as at 2026-03-31that presentation itself indicates the transaction is accounted for as a business combination not under common control (under common control, pooling of interests would generate no goodwill). If Shanghai Securities' future earnings fall short, 100% of the impairment loss is borne by all Orient Securities shareholders.

      The QC question of "whether this might constitute a combination under common control (both parties are Shanghai state-owned)" is reasonable; this report uses the presentation of goodwill in the pro-forma statements as counter-evidence. But this report did not check the draft's common-control tick box word for word, so readers who need to act on it should verify independently.

  • Its own earnings (positive): the 2026 interim earnings flash (7/25): revenue RMB 9.560 billion (+19.49%), net profit attributable to parent RMB 4.518 billion (+30.46%), ex-non-recurring RMB 4.418 billion (+30.94%), weighted ROE 5.50%. Backing out single-quarter Q2 net profit attributable to parent of RMB 2.931 billion, +44.6% YoY. The interim report is scheduled for 8/29.
  • The true basis of the dilution: BVPS is marginally accretive, 9.98 → 10.05 (+0.70%, because the issue price is above pre-deal BVPS); but EPS is diluted — pro-forma −1.5% for 2025, and pro-forma 2026Q1 goes from 0.19 to 0.16, dilution of 15.8% (the latter is closer to the present); ROE 6.81% → 6.60%; gearing excluding client funds 75.66% → 74.00%.
  • Valuation arithmetic: Orient Securities itself is at PB 0.905x and PE (TTM) 11.53x; the target is being bought at 1.2485x PB and 19.0x PE. It is buying a 1.25x PB asset with a 0.91x PB valuation of its own. At market prices the true economic cost is RMB 22.35 billion, implying 1.11x PB and 16.9x PE — still above its own valuation.
  • Target quality: Shanghai Securities' 2025 revenue was RMB 3.425 billion with net profit of RMB 1.323 billion (+38.8%); but its 2026Q1 securities trading and investment revenue was −RMB 88 million (a proprietary trading loss), with single-quarter net profit of RMB 151 million and an annualised ROE of only about 3.0%, well below Orient Securities' roughly 7.5% annualised over the same period. The valuation base date of 2026-03-31 is precisely that loss-making proprietary quarter, yet the appraisal premium is 24.85%.
  • Deal-failure risk: a whitewash waiver from the Hong Kong SFC plus independent shareholder approval under the Hong Kong Takeovers Code are required; the draft explicitly says "if … cannot be obtained, this transaction will not be implemented". It also needs A/H class shareholder meetings, the Shanghai SASAC, SSE review and CSRC registration.
  • Technical sentiment: +2.48% at RMB 9.08, turnover ratio only 0.76% — the coldest liquidity on the list; −17.7% from the high. The share price is 13.3% below the issue price and 2.8% below the pre-suspension RMB 9.34, showing the market has not assigned a sustained positive premium since trading resumed on 5/7.
  • Final judgement: watch closely. The event is new, the position is low and it is unpriced, and its own H1 flash of +30.46% is hard earnings; but the certainty of scale expansion far exceeds the certainty of per-share value creation.

8[Counter-example one] 天赐材料002709the market has the benefit direction backwards · Tinci Materials

  • The company's own basis (original text on the Shenzhen exchange interaction platform, 2026-06-23): "the company currently has annualised VC capacity of 3,000 tonnes and annualised VC purification capacity of 12,000 tonnes". The distinction is essential: the 3,000 tonnes is in-house synthesis capacity; the 12,000 tonnes is purification capacity, which requires purchasing crude VC for refining, and crude prices are rising too, so it does not close the raw-material exposure.
  • Exposure estimate (this report's estimate, not company disclosure): with 2026 electrolyte shipments of roughly 950,000–1,050,000 tonnes and a VC dosing ratio of 2.5%–3%, annual VC demand is about 24,000–32,000 tonnes, giving a self-supply rate of about 9~12% and net external exposure of about 21,000–29,000 tonnes/year. Every RMB 10,000/tonne rise in VC → +RMB 210–290 million of annualised cost. Per tonne of electrolyte: 3% × RMB 200,000 = RMB 6,000/tonne, which is 21% of the roughly RMB 28,250/tonne selling price of LFP electrolyte (only about 5% on the same basis a year ago).
  • The company has already admitted Q2 profit declined (original text of the 2026-07-10 analyst meeting record, No. 2026-003): "in the first half of 2026 the company's electrolyte shipments grew more than 40% YoY, and second-quarter electrolyte shipments rose about 20% QoQ; the company's profit in the second quarter of 2026 declined QoQ, mainly because prices of core raw materials such as lithium carbonate rose in the second quarter while the market average price of lithium hexafluorophosphate fell." → Backing out single-quarter Q2 net profit attributable to parent of RMB 1.046–1.346 billion, down 18.6%~36.8% from Q1's RMB 1.654 billion. Volumes up 20% yet profit down — its profit comes from the spread between the LiPF6 selling price and the lithium carbonate cost, not from shipment volumes, and certainly not from VC.
  • The market reaction already confirms it: after the H1 pre-announcement (7/10), the stock fell 7.16% on the next trading day, 7/13. And on 7/27, while Rike Chemical and Sunvim Group hit limit-up, Tinci was only +3.96%.
  • Cash flow (the weakest link): 2026Q1 operating cash flow −RMB 21 million vs net profit attributable to parent RMB 1.654 billion, with the roughly RMB 1.68 billion gap sitting in working capital (receivables +RMB 2.7 billion in the quarter). Mitigating: Q1 is seasonal (2025Q1 was also −RMB 122 million), and receivable days improved from 127 to 111.
  • What still holds: No. 1 in electrolyte in China (2025 sales above 720,000 tonnes, +44%); self-sufficient in LiPF6 and a net seller of it; gearing 35.56%, close to net cash; PE (TTM) 27.23x, about 19–21x once H1 lands.
  • The genuine VC capacity holders (note the boards): 华盛锂电 (Huasheng Lithium Battery, 688353, STAR Market), 泰和科技 (Taihe Technology, 300801, ChiNext), 富祥股份 (Fuxiang Co, 300497, ChiNext), 永太科技 (Yongtai Technology, 002326, Shenzhen main board), 孚日股份 (Sunvim Group, 002083, Shenzhen main board). Only Yongtai Technology and Sunvim Group are main board; but Yongtai is on PE 374.79x and Sunvim's position is extremely hot with a 23.67% turnover ratio and a 3.83 volume ratio yesterday, and this report verified neither company's VC revenue share, so this branch currently has no name that combines right logic + good position + main board + verified.
  • Final judgement: watch only (direction corrected). The fundamentals are not bad and the valuation is not expensive, but the logic chain "the VC price increase is positive for Tinci" is wrong, and the QoQ Q2 decline has already been confirmed by the company itself.

9[Counter-example two] 景旺电子603228the strongest tape, the weakest fundamentals; but the attribution needs more restraint than the first draft showed · Kinwong Electronic

It is simultaneously the leader of yesterday's PCB limit-up wave (a RMB 438 million bid queue) and the mainline name with the highest relative strength on the board (only −8.7% from its high and +19.6% over 20 days, while the rest of the branch is generally −30~50%). After primary verification the conclusion is the opposite — but QC flagged two overstatements in the first draft, which are corrected here as well.

  • Earnings facts (not in dispute): 2026Q1 revenue RMB 3.892 billion (+16.41%), net profit attributable to parent RMB 233 million (−28.37%), ex-non-recurring RMB 189 million (−18.53%), total profit −36.04%, weighted ROE only 1.76%, operating cash flow RMB 240 million (−51.97%).
  • [Correction one] the first draft wrote "five straight quarterly declines in gross margin", contradicting its own data. The actual sequence is 20.78%→21.95%→21.96%→21.56%→18.76%, i.e. the first four quarters oscillated between 21% and 22% and only the latest quarter fell off a cliff, −2.80pct QoQ. The correct statement is "a cliff-edge drop in the latest quarter's gross margin", not "five straight declines". (Net profit, on the other hand, has fallen consecutively: RMB 325 → 325 → 298 → 283 → 233 million.)
  • [Correction two] the first draft wrote "the cause of the decline is precisely this price cycle", which imposes causation. Back-calculating from the report's own data: net profit attributable to parent RMB 233 million (−28.37%) → RMB 325.3 million a year earlier; ex-non-recurring RMB 189 million (−18.53%) → RMB 232.0 million a year earlier. Non-recurring items fell from RMB 93.3 million to RMB 44.0 million, a decline of RMB 49.3 million, which is 53.4% of the RMB 92.3 million decline in net profit attributable to parent. That is: more than half of the −28.37% comes from shrinking non-recurring items such as government grants, unrelated to CCL costs; CCL price increases can only explain part of the −RMB 43 million on the ex-non-recurring line, and exchange losses are also mixed into that line. This report cannot isolate the standalone contribution of CCL costs.
  • But the core conclusion still holds; only the reasons must change: the genuinely solid negative evidence is not "five straight declines in gross margin" but these three —
    1. ex-non-recurring −18.53% YoY, which is negative growth in a quarter when the whole industry pre-announced positively;
    2. on the evening of 7/13, 15 PCB-chain companies collectively pre-announced positively (an average lower bound of +162.73% net-profit growth), and Kinwong was not on the list; as of today there is still no 2026 interim pre-announcement (the Shanghai main board only mandates one when the YoY change exceeds 50% → implying an H1 change within ±50%), with the interim report scheduled for 2026-08-22;
    3. it is not an AI PCB company: on the Hong Kong prospectus basis (relayed by media), automotive electronics was 45.4% of 2025 revenue, while "communications and data infrastructure" was only 10.4% (2025) / 15.6% (January–April 2026); HDI is only 8.1%, with gross margin down from 20.8% to 12.2%. Its industry position is "No. 1 globally in automotive PCB (10.6% share)", not No. 1 in PCB overall (11th globally, 2.5% share).
  • The true boundary of its AI exposure (no fabrication): volume supply of 800G optical-module PCB is genuine, and it has 1.6T mass-production capability; but for AI-server HDI the prospectus wording is "expected to supply a globally leading AI computing infrastructure enterprise, and has obtained that customer's certification" — "obtaining certification" ≠ "volume shipments" ≠ "recognised revenue", and there is no verifiable customer name, order value or supply schedule.
  • Valuation: PE (TTM) 71.1x, 82.8x ex-non-recurring, PB 6.07x. Gearing went from 40.25% to 46.77%, long-term borrowings jumped from RMB 284 million to RMB 3.444 billion, free cash flow has been persistently negative, and a Hong Kong IPO is in progress.
  • Final judgement: Pass (branch attribution overturned). Yesterday's strength was the capital-vehicle effect of "a low-positioned, large-cap PCB name + a Hong Kong IPO event". The direction (communications revenue +114.6%) is real; the current scale simply cannot support an AI narrative at an RMB 80.9 billion market cap.

6. Pass List

Rule (added in the rework): stocks appearing on this list no longer occupy a positive position in the Section 7 branch rankings, nor are they named as positive candidates in Section 9.

Code Name Concept Why it was associated Reason for Pass (specific) Keep watching?
002173 创新医疗 (Innovative Medical Management) brain-computer interface 2 limit-ups in 3 days, AM5 registration certificate The company falsified itself in the filing published the very evening of the limit-up: "AM5 … has not yet generated revenue"; Boling BCI's 2026H1 revenue was RMB 155,000 (0.045% of the total) with a loss of RMB 4.7514 million; 2026Q1 gross margin 2.48%; an H1 pre-announced loss of RMB 48–62 million, widening 322~446% YoY; in September 2025 the company itself acquired 100% of that asset in a deal priced at RMB 100 million, and the market now assigns a premium to net assets of RMB 7.405 billion = 74 times; AM5 is a Class II certificate from the Zhejiang provincial drug administration (an upper-limb exoskeleton rehabilitation device); the buyback cap of RMB 20 < the current price of RMB 20.69, so the floor has failed; the 2025 "62.9% narrowing of losses" was in fact an accounting illusion from a RMB 30.39 million consolidation revaluation gain Watch it as a case study in theme falsification
603228 景旺电子 (Kinwong Electronic) AI PCB Limit-up, RMB 438 million bid queue 2026Q1 ex-non-recurring −18.53%, with the latest quarter's gross margin falling off a cliff to 18.76%; automotive boards are 45.4% while AI-related is only 10.4~15.6%; it was not on the 7/13 list of 15 positive PCB pre-announcements and still has no H1 pre-announcement; its AI-server HDI is only "certified, expected to supply"; PE 71x against negative ex-non-recurring growth. (Note: about 53% of the −28.37% in net profit attributable to parent came from shrinking non-recurring items, not all from costs) Watch the 8/22 interim report
600487 亨通光电 (Hengtong Optic-Electric) optical communications Spillover from Changxin Bochuang's RMB 4.5 billion contract Its basis for inclusion cancels itself: that RMB 4.5 billion contract is confirmed by filing to use the net method, and the company says it does not affect earnings. −48.6% over 20 days, fundamentals unverified. Already removed from the overall ranking Watch
600775 南京熊猫 (Nanjing Panda Electronics) brain-computer interface Limit-up Its "core news" was actually a tape limit-up, not a news source (a 0-point source under the model); PE (TTM) 263.15x; no evidence on the BCI revenue share. Already removed from the overall ranking No
000021 深科技 (Shenzhen Kaifa) memory packaging & testing ChangXin listing re-rating Financials entirely unverified; no H1 pre-announcement; a high turnover ratio of 14.82%; the overnight US memory chain sold off collectively. Already removed from the overall ranking Watch
300548 长芯博创 (Changxin Bochuang) optical fibre & cable A RMB 4.5 billion five-year agreement The filing explicitly uses the net method for revenue recognition and states it "will not have a material impact on operating results for 2026 or future years"; ChiNext Watch
002611 东方精工 (Dongfang Precision) embodied intelligence Net profit attributable to parent +867.75% Revenue −21.68%, with the profit mainly a one-off disposal gain No
300214 日科化学 (Rike Chemical) electrolyte 20CM limit-up +66.8% over 5 days, +98.5% over 20 days, and the close is the 120-day high (0.0% from the high); PE (TTM) −348 (loss-making); turnover ratio 16.52%; its direct business relationship with VC is unverified; ChiNext No (high probability of a one-day wonder)
002083 孚日股份 (Sunvim Group) electrolyte / VC Follow-on limit-up Characterisation unified (rework correction): the company does have crude/refined VC capacity (media basis, segment revenue share unverified), but its main business is towels and home textiles; a 23.67% turnover ratio and a 3.83 volume ratio, the highest turnover on the board, an extremely hot position. This report does not list it as a positive candidate Watch (VC capacity to be verified)
002141 贤丰控股 (Xianfeng Holdings) PCB Limit-up PE (TTM) 517.74x, PB 7.33x; turnover ratio 17.85%; no evidence on how well its main business matches PCB No
001258 立新能源 (Lixin Energy) power 7 limit-ups in 8 days, the highest ladder position on the board The close is the 120-day high (0.0% from the high), +57.5% over 5 days, +105.6% over 20 days; PE 132.71x; the company has issued a risk warning saying there is "a risk of a rapid decline at any time" and describing the move as driven by sentiment factors such as "market speculation" No
000862 银星能源 (Yinxing Energy) power 2 limit-ups in 3 days The leader has already been risk-warned; PE 205.23x; turnover ratio 14.89% No
603567 珍宝岛 (Zhenbao Island Pharmaceutical) innovative drugs 4 limit-ups in 8 days PE (TTM) −3.73 (loss-making); +44.4% over 20 days; no new stock-level filing No
002900 / 000566 / 600594 哈三联 (Harbin Sanlian Pharmaceutical) / 海南海药 (Hainan Haiyao) / 益佰制药 (Yibai Pharmaceutical) innovative drugs 3 limit-ups in 4 days / 2 in 4 days All three have negative PE (TTM) (−12.48 / −15.70 / −8.14) and are loss-making; they have no direct business relationship with CSPC Innovation's BD logic No
601606 长城军工 (Great Wall Military Industry) defence 3 consecutive limit-ups PE (TTM) 3687x; the previous report verified an H1 pre-announced loss of RMB 96 million No
603619 中曼石油 (Zhongman Petroleum) oil & gas Already limit-down −10.00% on 7/27; the previous report verified an H1 pre-announced decline of 64.68~70.46% No
600376 首开股份 (Beijing Capital Development) humanoid robots (?) Limit-up and classified under humanoid robots A property developer with no traceable business relationship to humanoid robots; PE −1.49; a label mismatch No
301172 / 300911 君逸数码 (Junyi Digital) / 亿田智能 (Yitian Intelligent) computing-power leasing Server purchases of RMB 310 million / RMB 2 billion "Buying servers as a cross-sector move" is a capex-type theme, and purchases ≠ revenue ≠ profit; Yitian's main business is integrated cooker hoods, PE −21.64 (loss-making); both are ChiNext No
601138 / 002230 / 002050 工业富联 (Foxconn Industrial Internet) / 科大讯飞 (iFlytek) / 三花智控 (Sanhua Intelligent Controls) buybacks Buybacks filed on 7/27 A buyback is not a fundamental variable: Foxconn Industrial Internet's RMB 1–2 billion is only 0.08~0.16% of its RMB 1.22 trillion market cap, and none specifies cancellation No
000739 普洛药业 (Apeloa Pharmaceutical) CDMO Signed with WuXi Biologics A five-year strategic cooperation "framework agreement" with no amount, no exclusivity and no production scheduling Watch
300757 罗博特科 (Robotechnik) optoelectronic equipment A RMB 129 million contract That contract appears only in the Yicai round-up and was not traced back to the company's original filing; PE −905 (loss-making), PB 44.04x; ChiNext Watch

7. Intra-Branch Ranking

Branch 1: CCL / electronic cloth (materials end)

Rank Stock Main board Role H1 pre-announced growth Verification Fundamental support Trading recognisability Conclusion
1 生益科技 (600183) Leader / core +117~131% Gross margin up for five quarters to 28.10%, 2025 operating cash flow / net profit attributable to parent 1.58x No limit-up, turnover ratio 2.39%, volume ratio 0.74 priority deep-dive
2 中国巨石 (600176) Electronic-cloth leader +65~85% Electronic-cloth segment gross margin 52.9%, gearing 38.9% Limit-up, RMB 416 million bid queue priority deep-dive
3 金安国纪 (002636) High-beta name +935.75~1063.45% Q1 margins reported to have caught up with Shengyi (unverified) Limit-up, oversold −48.8% watch closely
4 宏和科技 (603256) Pure niche name +280~364% The cleanest attribution, but PE 466x / PB 53.5x Limit-up watch only (extreme valuation)
5 中材科技 (002080) Back row (diluted) No pre-announcement → implied <50% Diluted by wind blades and lithium separators Limit-up watch only
6 山东玻纤 (605006) Catch-up / back row None PE −756 (loss-making) Limit-up watch only
南亚新材 (688519)/长海股份 (300196)/国际复材 (301526) Observation zone Changhai's PE 21.4x / PB 1.49x is the lowest valuation in the chain observe only

Hardest stocks: 生益科技 (financial quality) / 中国巨石 (empirical proof of price pass-through). Best suited to main-board trading: 生益科技 (no limit-up, turnover ratio 2.39%, no need to chase a high). Who is following: 山东玻纤 (loss-making), 中材科技 (no pre-announcement). Who is a Pass: 贤丰控股.

Branch 2: AI computing PCB (manufacturing end)

Rank Stock Main board Role H1 pre-announcement Verification Conclusion
1 沪电股份 (002463) Leader +68.17~78.28%, Thailand turned profitable in Q2; but the main engine is switch boards (43.1%), not AI servers (15.9%) watch closely
2 深南电路 (002916) Core +54.41~69.12% (the attribution includes "memory", colliding with the overnight negative) watch closely
3 兴森科技 (002436) High-beta name +246.83~316.19% (a low-base swing to profit; absolute profit of only RMB 100 million vs a RMB 60.7 billion market cap, PE 420x) watch only
inverse 景旺电子 (603228) Negative ex-non-recurring growth No pre-announcement; Q1 ex-non-recurring −18.53% Pass
胜宏科技 (300476)/生益电子 (688183) Observation zone Shengyi Electronics 2026Q1 net profit attributable to parent +122.2%, gross margin 35.21% observe only
超声电子 (000823) Not given a positive position in this branch No pre-announcement observe only — it sits in mid- and low-end PCB, so if the "cannot pass on" hypothesis holds it should be on the losing side; the first draft's "watch closely" conflicted with the branch conclusion and has been corrected

Branch 3: VC / electrolyte — the benefit direction needs re-ordering

Rank Stock Main board Relationship to the VC price increase Verification Conclusion
1 华盛锂电 (688353) ❌ STAR Market Seller (9,000 tonnes of VC plus 30,000 tonnes planned; BYD has taken a strategic stake in its Xianghe New Energy) observe only (not main board)
2 永太科技 (002326) ✅ Shenzhen main board Seller (CATL has signed a long-term agreement locking in 90,000 tonnes of VC) observe only (PE 374.79x, VC revenue share unverified)
3 泰和科技 (300801) / 富祥股份 (300497) ❌ ChiNext Seller observe only (not main board)
4 天赐材料 (002709) Buyer (VC self-supply rate only 9~12%); the real driver is the LiPF6 spread watch only
5 石大胜华 (603026) Indirect (the solvent link) watch only
孚日股份 (002083), 日科化学 (300214) See the Pass list Pass

The key correction in this branch: the beneficiaries of a VC price increase are companies with their own VC capacity, not electrolyte makers — electrolyte makers are VC buyers. But among the genuine capacity holders, only 永太科技 and 孚日股份 are main-board names, and this report verified neither company's VC revenue share, while both have unfriendly valuations and positions. So this branch currently has no name that can be primarily recommended.


8. Opening Verification Signals for Today (2026-07-28)

The following are observation items, not trading instructions.

Auction and volume

  • 中国巨石 (600176), 金安国纪 (002636), 中材科技 (002080), 宏和科技 (603256), 山东玻纤 (605006) all hit limit-up yesterday: watch for one-word boards, the size of the gap up, and whether the bid queues hold (Jushi's was RMB 416 million yesterday). If the queues disintegrate quickly after a gap up, it points to "a one-day oversold bounce".
  • 生益科技 (600183), 沪电股份 (002463), 深南电路 (002916) did not hit limit-up yesterday: their volume ratios yesterday were only 0.74 / 0.64 / 0.82, all below 1 — this is the key evidence of "the index rose but the mainline had no volume". Watch whether volume recovers today.
  • 东方证券 (600958): a suspension can essentially be ruled out today. Its turnover ratio was only 0.76% yesterday; watch whether volume expands significantly (a new pricing signal).
  • 石药创新 (300765): the H1 swing-to-profit pre-announcement is in-window news, and yesterday it fell −1.30% against the trend without reflecting it (ChiNext, observation only).

Sector structure

  • Watch whether "3 or more fast limit-ups" appear at the materials end or among mid- and low-end PCB / concept stocks. If they concentrate in the latter (e.g. 景旺电子, 贤丰控股), it points to the market still being mismatched.
  • Ladder thickness: 121 limit-ups yesterday but only 8 with consecutive limit-ups. If the counts of second and third boards fall rather than rise, it points to sentiment retreating.
  • Semiconductor / memory chain: the SOX fell more than 2% overnight and 兆易创新 (603986) was already −5.03% yesterday. Watch whether it keeps falling on volume and drags down 长鑫科技 (688825).

Stock-level observation points

  • The highest ladder positions: 立新能源 (001258, 7 limit-ups in 8 days), 珍宝岛 (603567, 4 limit-ups in 8 days). If the top ladder names gap up and fade or break their seals, the consecutive-limit-up ladder usually collapses in step.
  • 创新医疗 (002173): last night's filing already falsified the story and flagged a pre-announced loss. Its move today is the most direct sentiment thermometer on the board — if it can still seal, sentiment alone is in charge; if it gaps up and dives, that is the standard "sell the news on landing" pattern.
  • 金安国纪 (002636): watch changes in its bid queue and the composition of its turnover (it is the only name that combines "the highest growth rate + the deepest oversold + main board + limit-up yesterday", but its verification tier is the thinnest).
  • Positioning effect: if 宏和科技 (603256) keeps hitting limit-up, it will divert capital away from 金安国纪 and 生益科技 at a PE of 466x.

Risk signals

  • Turnover: of yesterday's RMB 2.09 trillion, 长鑫科技 alone was RMB 141.1 billion, leaving almost zero increment after stripping it out. If two-market turnover falls back below RMB 1.9 trillion today, the bounce structure tends to disintegrate.
  • The three lines from yesterday most likely to retreat: brain-computer interface (the catalyst is 7/22 old news), power (Lixin Energy has been risk-warned), and innovative drugs (all 4 consecutive-limit-up names are loss-making).
  • Events: FOMC 7/28–29, with the decision at 02:00 Beijing time on 7/30, CME pricing 34.7% for a 25bp hike and about 82% for a September hike — a hawkish-leaning backdrop. The July Politburo meeting has not yet convened and could land at any time, with two-way direction.
  • Other items today: 西安奕材 (688783) unlocks 2.0735%; 嘉必优 (688089) resumes trading under a risk-warning designation; the State Council Information Office's "15th Five-Year Plan" tax reform briefing.
  • ⚠️ Landmine screening this report did not complete: for the top names (生益科技, 中国巨石, 沪电股份, 深南电路, 金安国纪), this report screened none of the unlock calendars, shareholder reduction plans, pledge ratios, or regulatory inquiries/investigations (only 神火股份, 创新医疗, 财达证券, 西安奕材 and 嘉必优 have relevant records). Please check this yourself before the open.

9. Final Recommendations

① The 5 main-board stocks most worth watching today

Rank Stock Branch Reason to watch Biggest risk Observation point today
1 生益科技 (600183) CCL H1 pre-announced +117~131% (ex-non-recurring +97~112%); single-quarter gross margin up for five quarters to 28.10% with a record net margin; 2025 operating cash flow / net profit attributable to parent 1.58x; no limit-up yesterday PE (TTM) 77.9x (about 54x once H1 lands); −32.7% from the 6/25 high; the stock actually fell 6.3% after the 7/13 pre-announcement; upstream is rising too, so watch the spread; unlocks / reductions not screened Whether volume recovers (yesterday's volume ratio was 0.74); whether it can hold above yesterday's high of 125.99
2 中国巨石 (600176) electronic cloth H1 pre-announced +65~85%, accelerating QoQ in Q2; the electronic-cloth segment gross margin of 26.9%→52.9% is the cleanest empirical proof of price pass-through on the board; gearing 38.9% The company itself says it "has no direct business dealings with AI server or optical-module companies"; 2026Q1 operating cash flow / net profit attributable to parent only 0.17x, receivables +66%; the 2027 supply shock has been flagged by the company; unlocks / reductions not screened Whether the RMB 416 million bid queue holds
3 沪电股份 (002463) AI computing PCB H1 pre-announced +68.17~78.28%, with Q2 implied at +73~91% and accelerating; the Thai subsidiary turned profitable in single-quarter Q2; data communications is 77.4% of revenue The SOX fell more than 2% overnight; the main engine is switch boards, not AI servers (only 15.9%); zero QoQ improvement in Q1 gross margin; Q1 operating cash flow / net profit 0.41, capex > OCF, gearing up to 48.64%; PE is in the 96th percentile of the past 5 years; unlocks / reductions not screened Whether it can trade independently while overseas chip stocks sell off; whether the volume ratio returns above 1
4 深南电路 (002916) PCB / packaging substrates H1 pre-announced +54.41~69.12%; dual main businesses in PCB and packaging substrates; no limit-up yesterday, turnover ratio only 1.51% The company lists the "memory market" as its first driver while the overnight memory chain is selling off collectively; PB 14.63x; a △ name, with segments and cash flow unverified; unlocks / reductions not screened Whether it can hold yesterday's gain despite the memory-chain drag
5 金安国纪 (002636) CCL H1 pre-announced +935.75~1063.45%, the highest in the branch; Q2 +161~206% QoQ; −44.6% over 20 days and −48.8% from the high, the deepest oversold A △ name with the thinnest verification among the top names; the growth rate contains an obvious low base; PB 12.45x; the M9 breakthrough is undecided; unlocks / reductions not screened Whether the bid queue holds; the composition of turnover

Two ordering changes relative to the first draft: 天赐材料 (002709) has been removed (the VC benefit direction is inverse plus a QoQ Q2 decline; see Section 5 ⑧); 金安国纪 falls from 3rd to 5th (its expectation-gap score was rejudged per the model, and its △ verification tier is the thinnest; see Section 5 ⑤).

② The 3 strongest branches today

Rank Branch Core catalyst Persistence Representative stocks (main board)
1 CCL / electronic-cloth price hikes (materials end) Four formal company H1 pre-announcements (+65% to +1063%) plus China Jushi's segment gross margin of 26.9%→52.9% as empirical proof plus 7628 electronic cloth RMB 4.3 → 7.3–7.7/metre (five rounds, 2025/10–2026/6) Medium term; but the last electronic-cloth increase was in June, and the price evidence for the July round was verified to be self-media and downgraded to rumour; the 2027 supply shock has been flagged by the companies 生益科技 (600183), 中国巨石 (600176), 金安国纪 (002636)
2 AI computing PCB (manufacturing end) WUS +6878%, Shennan +5469%, Fastprint +247~316% (all company pre-announcements) Medium term, but the overnight overseas read-across is negative and "price pass-through" still has no financial evidence 沪电股份 (002463), 深南电路 (002916)
3 Broker M&A Orient Securities' restructuring draft landing plus its own H1 flash net profit attributable to parent +30.46%; the Securities Association has launched a "special evaluation of brokers' M&A capabilities" Event-driven, with approvals measured in quarters 东方证券 (600958)

③ Directions not worth chasing today + why

  1. Brain-computer interface — the catalyst is 7/22 old news re-fermenting; the leader 创新医疗 falsified itself in the filing published the very evening of its limit-up ("has not yet generated revenue" plus an H1 pre-announced loss widening 322~446%), and the buyback floor has already failed at RMB 20; there is no main-board name with revenue support.
  2. Mid- and low-end PCB (including yesterday's limit-up 景旺电子 (603228)) — Kinwong's 2026Q1 ex-non-recurring was −18.53%, it was not on the 7/13 positive pre-announcement list and still has no H1 pre-announcement, yet it trades at PE 71x; and it is an automotive-board company (45.4%), not an AI PCB company. Strongest on the tape ≠ strongest on fundamentals.
  3. Treating electrolyte makers as "VC price-hike beneficiaries"天赐材料 (002709)'s VC self-supply rate is only 9~12% and it is a net buyer; the company has confirmed Q2 profit fell 18.6~36.8% QoQ. The list of genuine VC capacity holders is in Section 5 ⑧, but this report verified neither main-board name's (永太科技 002326, 孚日股份 002083) VC revenue share, and both have unfriendly positions and valuations, so this report names none of them as a recommendation.
  4. Memory / the ChangXin chain — ChangXin was +465.82% yesterday but the sector "could not be carried along" (GigaDevice −5.03%, Puya Semiconductor −6.23%); the overnight US memory chain kept selling off; and ChangXin's RMB 141.1 billion of single-stock turnover is itself a drain on liquidity.
  5. High-level consecutive-limit-up names — 立新能源 (001258) (7 limit-ups in 8 days, closing at the year's high, PE 132.7x, the company has issued a risk warning describing the move as sentiment-driven), 珍宝岛 (603567) (4 limit-ups in 8 days, loss-making), 日科化学 (300214) (+66.8% over 5 days, closing at the year's high, loss-making).
  6. Cross-sector computing-power leasing and buyback concepts — 君逸数码 (301172) and 亿田智能 (300911) fall under "buying servers ≠ revenue ≠ profit"; the buybacks at 工业富联 (601138), 科大讯飞 (002230) and 三花智控 (002050) are less than 0.2% of market cap and do not specify cancellation.
  7. The innovative-drug consecutive-limit-up ladder — 哈三联 (002900), 海南海药 (000566), 益佰制药 (600594) and 珍宝岛 (603567) all have negative PEs (all loss-making) and no direct business relationship with CSPC Innovation's BD logic.

④ The final one-sentence judgement

The only genuinely solid evidence today is four formal company H1 pre-announcements (Shengyi +117131%, Goldenmax +9361063%, Honghe +280364%, Jushi +6585%) plus the single empirical proof of China Jushi's electronic-cloth segment gross margin going from 26.9% to 52.9%; whereas the price evidence for "this round of July price increases" was verified to come from self-media, the verifiable electronic-cloth increases stop with the last round in June, and the third tier of the "three-tier price-hike classification" rests on a single sample contaminated by non-recurring items — so what to do today is watch earnings filings, not price-hike rumours. At the same time, all three of yesterday's most sought-after lines need correcting after primary verification: Kinwong Electronic has negative ex-non-recurring growth and is an automotive-board company, Innovative Medical Management was contradicted by its own filing, and Tinci Materials is a net buyer of VC rather than a beneficiary. Against a backdrop of the SOX falling more than 2% overnight, a hawkish-leaning FOMC, a consecutive-limit-up ladder of only 8 names, and every mainline name's volume ratio below 1, waiting for the core leaders to confirm on volume is safer than chasing yesterday's limit-up boards.


Appendix: Revision Log and Known Uncertainties

A. Revisions relative to this report's first draft (triggered by risk-auditor QC)

# Location First draft After revision Triggering evidence
1 News #15/#16, Branch 1 rating Labelled a set of price data such as "M8/M9 +12~22%" as "industry information relayed by Sina, level A", and on that basis rated Branch 1 S− That source is in fact Weibo self-media (published 6/27) and has been downgraded to a rumour-tier 0-point source; moreover the "five rounds of increases / +70% / RMB 7.3–7.5/metre" that the first draft hung on that link does not exist on that page (a citation mismatch), and it is now replaced by the authoritative-media-verified 7628 electronic cloth RMB 4.3 → 7.3–7.7/metre across five rounds (2025/10–2026/6); Branch 1 is cut from S− to A QC pulled the page live; the header reads "Weibo verification: entertainment blogger", and the page lists 景旺电子 as a "genuine AI-server PCB beneficiary" — already overturned by this report
2 景旺电子 (3 places) "five straight quarterly declines in gross margin"; "the cause of the decline is precisely this price cycle" Changed to "−2.80pct QoQ to 18.76% in the latest quarter, with the previous four quarters oscillating between 21% and 22%"; the causal statement changed to "53.4% of the decline in net profit attributable to parent came from shrinking non-recurring items, and this report cannot isolate the standalone contribution of CCL costs"; the risk deduction adjusted from −12 to −10 The sequence the report itself lists, 20.78→21.95→21.96→21.56→18.76, is not five straight declines; back-calculation shows non-recurring items fell from RMB 93.3 million to RMB 44.0 million, 53.4% of the RMB 92.3 million decline in net profit attributable to parent
3 Branch 1/2 key points, Branch 2 closing note The "three-tier price-hike classification" was called "this report's core conclusion" Downgraded to "a hypothesis to be verified", with three defects disclosed (using Q1 data to test a July event, tier three with n=1 and a contaminated sample, over-aggregation in tier one); 超声电子 (000823) removed from a positive position in Branch 2 (it sits in mid- and low-end PCB, and the first draft's "watch closely" contradicted the branch conclusion) Timing mismatch; sample size and contamination
4 金安国纪's score Expectation gap judged "slightly positive" (about 8 pts), total 70, 3rd overall, 4th in the Top 5 Rejudged under the Section 4 model's "share price falls after a pre-announcement → 0–4 pts", cutting the total to 64, to 5th overall and 5th in the Top 5 Shengyi Technology in the same situation (share price fell after a pre-announcement) was judged "low expectation gap" — a double standard
5 The Section 4 scoring model The seven dimensions summed to a maximum of 95 yet were labelled "100 points total"; the "○ cap of 8" exceeded the stated range of "0–5" Added a "profit quality 0–5" dimension so the total is 100; fixed the range conflict; added △ caps (fundamentals ≤12, expectation gap ≤6) Arithmetic and rule conflicts
6 The "distance from the high" for 沪电股份 and 生益科技 WUS was written as −24.2% in one place and −25.7% in another, and was called "the smallest drawdown among the mainline names". Shengyi was −34.3% in the header and −32.7% in the text Bases standardised: WUS −24.2% from the 6/25 high / −25.7% from the 120-day high; "the smallest among the mainline names" deleted (Kinwong at −8.7% and Orient Securities at −17.7% are both smaller); Shengyi likewise labelled on both bases Inconsistent figures; "smallest" was false
7 生益科技's valuation "rolling in H1 gives about 60x" Corrected to about 54x (TTM 39.29 − 14.28 + 31.99 ≈ RMB 5.7 billion; 3060/57 ≈ 53.7x) Arithmetic error
8 The overall ranking 亨通光电, 南京熊猫 and 深科技 were on the list All three removed from the ranking and moved to the Pass list (their basis for inclusion was negated by their own risk column, or the "core news" was actually the tape) Scored despite insufficient evidence
9 孚日股份 Appeared simultaneously on the Pass list, at 4th in Branch 3 ("seller · genuine capacity") and as a positive name in Section 9 ③ Unified as a Pass, occupying no positive position in the branch ranking, with its positive mention deleted from Section 9 ③ Conflicting characterisations
10 Codes and boards throughout More than ten stocks had no code; "富祥药业" was a wrong abbreviation; Fuxiang and Taihe were treated as positive names without being labelled ChiNext All codes completed; corrected to 富祥股份 (300497); 泰和科技 (300801) and 富祥股份 (300497) labelled ChiNext and moved to the observation zone Iron rule 5 (every stock must carry its code), iron rule 3 (main board first)
11 Wording in Sections 8/9 "no need to chase a high", "whether it seals quickly without breaking, with net large-order inflows" Changed to neutral observational wording Too close to trading instructions, conflicting with "does not constitute investment advice"
12 News #14 "up more than 300%" cited as industry data Labelled as one interviewed company's verbal account, not a price index; level cut from A to B; and it is noted that the basis difference between 300% and 12~22% could not be reconciled QC pulled the original Chinanews text

B. This report's known evidentiary weaknesses (unresolved before the open)

  1. The totals are not auditable: the top-10 stocks do not have their 8-dimension score breakdowns disclosed name by name, so the totals should be used only as a rough ordering.
  2. Company-event screening is missing: for the 5 top-tier names, unlocks, reduction plans, pledge ratios and inquiries/investigations were all unscreened. This is the highest-value pre-market landmine check; readers should complete it themselves.
  3. For the △ names (深南电路, 中材科技, 宏和科技, 金安国纪, 兴森科技), segment structure, cash flow and working-capital quality are all unconfirmed, so their "industry position & fundamentals" scores carry overestimation risk (capped at 12 pts, but not eliminated).
  4. SSE links may not connect directly: static.sse.com.cn has anti-scraping checks and a direct connection may return a JS challenge page; the Orient Securities section of this report was obtained via a Xueqiu mirror with filing numbers and figures cross-verified, but readers clicking the links may find they do not open.
  5. The draft's tick box for "whether this constitutes a business combination under common control" was not checked word for word for 东方证券 — this report uses the RMB 4.875 billion of goodwill in the pro-forma statements as counter-evidence for "not under common control", but that inference is not a direct quotation.
  6. All industry-position data are secondary: Prismark's "second globally / 13.7%", "about 33% domestic electrolyte share", "Kinwong No. 1 globally in automotive boards 10.6% / 11th globally in PCB", "Shenhuo's 1.7 million tonnes of electrolytic aluminium" and so on were not obtained from primary rankings or original disclosures, and this is the category most easily passed off as current when the information is stale.
  7. Dimensions with zero data in the whole report: the latest capex guidance from cloud providers / server OEMs, each name's order backlog, Q3 guidance, and channel and industry inventories — precisely the key variables for judging whether the price increases can persist.
  8. No sell-side consensus was obtained for any name, so every judgement in the text about "a beat / unpriced / expectation gap" is relative to the company's own pre-announcement rather than market consensus.
  9. All of Kinwong Electronic's January–April 2026 data (revenue RMB 5.341 billion, net profit RMB 317 million, gross margin 18.7%, RPCB gross margin 10.8%, downstream mix) are media relays of the Hong Kong prospectus; the original HKEX PDF was not obtained, and IFRS differs from the A-share net-profit-attributable-to-parent basis.
  10. Tinci Materials' VC exposure estimate (a 9~12% self-supply rate) is this report's own estimate, based on the two assumptions of "electrolyte shipments of 950,000–1,050,000 tonnes and a VC dosing ratio of 2.5%–3%"; the company has never disclosed its actual self-supply rate.
  11. ST 恒信 and 万和科技 (Wanhe Technology): the code of the former was not verified, and the latter is an unlisted target.
  12. 金安国纪's +936~1063% contains an obvious low base, and there is no reliable data on its actual positioning in high-end grades such as M9.

⚠️ Risk warning: this list is only a pre-market information review and observation and does not constitute investment advice. A-share volatility risk is extremely high, and automatically generated content may contain timeliness gaps or industry-chain mapping errors; it must not be used directly as a basis for trading. All quotes in the text are as at the 2026-07-27 close and become invalid once the session opens; the financial data of stocks marked △/○ have not been primary-verified; data relating to the 2026 interim reports are mostly pre-announcement ranges, with the companies' formal disclosures prevailing; Appendix B of this report lists 12 known evidentiary weaknesses — please read it before using any conclusion.

Sources29

Every external link cited in the body, numbered in order of appearance. · 18 domains

  1. 1Sina Financefinance.sina.com.cn
  2. 221jingjim.21jingji.com
  3. 3CLSm.cls.cn
  4. 4Chinanewschinanews.com.cn
  5. 5Draft summaryPDFstatic.sse.com.cn
  6. 6Full draftPDFstatic.sse.com.cn
  7. 7Interim report PDFPDFstatic.cninfo.com.cn
  8. 8Filing PDFPDFpdf.dfcfw.com
  9. 9JRJstock.jrj.com.cn
  10. 10Securities Timesstcn.com
  11. 11Yicaiyicai.com
  12. 12Stock Sea Navigatorfinance.sina.com.cn
  13. 13Flash PDFPDFstatic.sse.com.cn
  14. 14NBSstats.gov.cn
  15. 15Trading Must-Readfinance.sina.com.cn
  16. 16NBDnbd.com.cn
  17. 17Sinafinance.sina.com.cn
  18. 18THSgoodsfu.10jqka.com.cn
  19. 1921jingjim.21jingji.com
  20. 20Source pagesina.cn
  21. 2121jingjim.21jingji.com
  22. 22Sinafinance.sina.com.cn
  23. 23Caixineconomy.caixin.com
  24. 24Sinasina.cn
  25. 25Sinafinance.sina.com.cn
  26. 26JRJhk.jrj.com.cn
  27. 27CNRcnr.cn
  28. 28CLScls.cn
  29. 29Securities Timesstcn.com