生益科技跌9.52%、生益电子跌7.09%、沪电股份跌7.62%，三家都做PCB上游到下游，同一天却一起被砸，究竟是整条…
- 前三季度预告64.6亿到68.7亿，减掉上半年，三季度单季是31.73亿到35.83亿，环比增49%到68%，去年同期单季才10.17亿，同比增212%到252%
- 印制线路板收入55.19亿、同比增52.03%，成本增44.97%，毛利率31.20%、提3.35个百分点
- 生益科技半年报的分行业表写得很清楚：覆铜板和粘结片收入123.57亿、同比增47.74%，营业成本增37.15%，毛利率29.16%、同比提5.47个百分点
- 深南电路10月23日披露三季报，单季归母18.78亿、同比增94.42%，单季营收104.78亿、同比增66.29%，10月26日跌5.47%
- 从32.62%掉回2025年全年的26.47%，毛利少6.7亿，差不多是二季度归母21.29亿的三成
生益科技跌9.52%、生益电子跌7.09%、沪电股份跌7.62%，三家都做PCB上游到下游，同一天却一起被砸，究竟是整条链的需求预期变了，还是只是三季报正报日集体兑现？
Shengyi Technology fell 9.52%, Shengyi Electronics fell 7.09%, and WUS Printed Circuit fell 7.62%. All three operate from upstream to downstream in PCB, yet on the same day they were all sold off together. Is it that the demand expectations for the entire chain have changed, or is it merely a collective cashing-out on the official third-quarter report disclosure day?
The desk answers已核实Walnut, from public filings
这条的前提不成立：10月26日不是三季报正报日，这三家的三季报一份都还没出来。生益科技在自己10月17日的业绩预增公告里写明了「预约披露日期为2026年10月30日」；沪电股份的预约披露日是10月28日，生益电子也是10月30日。10月中旬他们发的是业绩预告（沪电10月15日，生益科技、生益电子10月17日），预告不是正报，离10月26日已经隔了6到9个交易日，构不成「当天兑现」。10月26日市场上真正落地的三季报，是10月23日深南电路和华正新材那两份。
能查的是：8月披露的2026年半年报、10月中旬的三季报预告、10月的调研记录和经营公告。答案不是二选一——需求预期没变，兑现的也不是业绩，变的是市场对「这条链的毛利率还能撑多久」的定价。
10月26日收盘，生益科技100.26元、跌9.52%，盘中一度摸到跌停；生益电子81.09元、跌7.09%；沪电股份98.90元、跌7.62%。同一天南亚新材跌12.49%，华正新材、金安国纪、澳弘电子、华盛昌跌停，景旺电子跌7.92%，东山精密跌7.70%，兴森科技跌6.33%，深南电路跌5.47%，鹏鼎控股跌4.49%。另一边，胜宏科技涨2.47%，寒武纪涨3.84%，上证指数涨0.19%，创业板指跌1.71%。所以不是整条链被无差别砸，是「覆铜板＋材料＋通用PCB」这一段被集中卖，AI板反而有人接。
三季报预告拆到单季，三家都不是走弱。生益科技上半年归母32.87亿，二季度单季21.29亿；前三季度预告64.6亿到68.7亿，减掉上半年，三季度单季是31.73亿到35.83亿，环比增49%到68%，去年同期单季才10.17亿，同比增212%到252%。沪电上半年归母29.23亿，二季度单季16.81亿；前三季度54.5亿到57.0亿，三季度单季25.27亿到27.77亿，环比增50%到65%，同比增144%到168%。生益电子上半年归母11.11亿，二季度单季6.66亿；前三季度18.686亿到19.517亿，三季度单季7.58亿到8.41亿，环比增14%到26%，同比增30%到44%——它同比增速掉下来，是因为去年三季度本身就是个高台阶（2025年三季度单季5.84亿，比当年二季度跳了77%），不是因为今年三季度变差了。三家二季度到三季度，没有一个环比往下走。
所以「三季报兑现变利空」这个版本，在业绩这一层就断了。更能说明问题的是已经出了正报的那两家：华正新材10月23日披露三季报，三季度单季归母6.27亿、同比增3044.60%，10月26日直接跌停；深南电路10月23日披露三季报，单季归母18.78亿、同比增94.42%，单季营收104.78亿、同比增66.29%，10月26日跌5.47%。业绩摆在桌面上而且是爆的，照样挨砸。如果跌的原因是「数字不好」，这两家不该跌；如果跌的原因是「数字太好所以兑现」，那也不是需求预期的问题。
需求这一侧，已披露的文件里找不到转弱的证据，反而全是「紧」。生益电子10月24日的《关于公司近期生产经营情况的公告》原话是「目前生产经营活动、订单交付、重大项目推进及产能扩建等工作均正常开展，订单充足，供应链稳定，产能利用率保持较高水平」。沪电股份10月20日的投资者关系活动记录表原话是「公司整体产能持续保持高位运行，订单需求充沛，营收与盈利已连续多个季度创下历史新高」，同一份里还写着适配224Gbps的核心产品已小批量供货、1.6T交换机产品已批量出货。深南电路三季报的资产负债表变动说明更直接：合同负债3.63亿、比年初增109.92%，公司给的原因是「预收货款增加」；应收账款增72.53%，原因是「业务订单增加」；存货增88.72%，原因是「业务规模增加以及备料」。连下游都在替这条链作证——瑞芯微10月27日的三季报里写「三季度PCB原材料供应短缺、交期拉长……PCB的延迟交付影响到三季度终端产品生产，芯片订单滞后、顺延」。PCB紧到卡住别人出货，这不是需求转弱。
那10月26日卖的到底是什么？卖的是毛利率的顶部和2027年的供给，不是订单。生益科技半年报的分行业表写得很清楚：覆铜板和粘结片收入123.57亿、同比增47.74%，营业成本增37.15%，毛利率29.16%、同比提5.47个百分点；印制线路板收入55.19亿、同比增52.03%，成本增44.97%，毛利率31.20%、提3.35个百分点。收入跑得比成本快，涨价是转嫁出去的。拆到单季更陡：合并毛利率一季度28.10%，二季度32.62%，一个季度抬了4.52个百分点。毛利率一个季度抬4.5个点，不可能一直抬下去；而三家的产能都在同时往上堆——在建工程，生益科技从年初13.54亿加到半年末21.41亿（增58.2%），生益电子从10.21亿加到15.19亿（增48.8%），沪电从24.60亿加到35.71亿（增45.2%），深南从18.51亿加到46.30亿（增150.17%）。2027年这些产能一起来，覆铜板还提得动价吗？这是10月26日真正被定价的东西：不是「明年订单少一半」，是「今年这个毛利率是周期顶」。
顺带说一句，这三家不该被当成同一条生意。「生益科技—生益电子」是父子，一个卖覆铜板、一个买覆铜板做板；覆铜板涨价，对生益科技是收入，对生益电子是成本。二季度单季毛利率，沪电从35.63%抬到41.28%，环比提5.65个点；生益电子从35.21%掉到33.67%，环比降1.53个点。同样挂着「PCB」标签，一个在提价，一个在被上游提价。把它们放在一个篮子里同日卖出，本身就是仓位动作，不是基本面判断。10月23日深南、华正出报，10月27日景旺，10月28日沪电，10月30日生益科技和生益电子——三季报最密的一周，赶在窗口前降仓位，不需要新消息。生益科技10月26日自己首次回购39.63万股，价格99.73元到102.74元，花3999万元，买在当天最低价。
反方最强的论点在这儿：如果三季度就是毛利率顶，那现在这个「便宜」是假的。周期股在盈利顶部市盈率最低，因为分母是顶。按三季度单季中值乘四粗算年化，生益科技约135亿、对应10月26日收盘市值2435亿，是18倍；沪电约106亿、对应1903亿，是18倍；生益电子约32亿、对应698亿，是22倍。18倍买一个同比翻倍的公司听着不贵，但分母要是缩了——按二季度108.84亿收入算，毛利率每掉1个百分点毛利少1.09亿；从32.62%掉回2025年全年的26.47%，毛利少6.7亿，差不多是二季度归母21.29亿的三成。分母缩三成，18倍就是26倍。空方还有一层：中信证券10月26日的观点是「商业化空间增长焦虑还将继续约束AI投资单年度的绝对规模体量，同时加深市场对于行业拐点的警惕」——这话没落在任何一张报表上，却是这轮去估值唯一站得住的产业逻辑，也是反方最有分量的一击。
还有一个细节：三家10月26日的成交额都没有放大。生益科技72.2亿，前一个交易日76.1亿；沪电56.3亿，前一日59.9亿；生益电子11.9亿，前一日11.5亿。跌7%到9.5%量没出来，不是筹码夺门而出，是买盘撤了、没人接。这种跌法对应的是仓位和流动性，不是有人拿到新消息在出货。截至10月27日13时，三家没有再放量下杀，沪电涨2.9%、生益科技涨0.4%、生益电子跌0.3%，10月26日那根阴线暂时没有变成连续下跌。
要验这个解释，就看四个数。一是10月30日生益科技的三季报：单季毛利率如果还在32.62%之上，说明涨价还在继续，「三季度是顶」被证伪；如果环比掉超过1个百分点，这个解释成立。二是10月28日沪电的三季报：二季度单季毛利率41.28%，三季度跌破40%就意味着高端板的定价权开始松动。三是收入而不是利润——生益科技二季度单季营收108.84亿，三季度如果收入环比不增、利润却大增，那利润是投资收益和价格撑的，含金量要打折。四是需求侧的真凭实据：如果四季度出现覆铜板或电子布降价、或者北美云厂下调2027年资本开支，那我说的「需求没变」就是错的，因为那时候变的才是需求。
一句话收口：10月26日不是三季报兑现日；能查的指标全指向紧，需求没坏；坏掉的是「毛利率还能一个季度抬4.5个点」这个假设，加上2027年扩产的供给阴影。跌得最狠的是最上游的覆铜板，涨的是最纯的AI板，排序就是答案。
来源：广东生益科技股份有限公司《2026年前三季度业绩预增的自愿性披露公告》2026年10月17日（公告编号2026-057）；《关于以集中竞价交易方式回购股份方案的公告》2026年10月22日（2026-060）；《关于以集中竞价交易方式首次回购公司股份的公告》2026年10月27日；《2026年半年度报告》2026年8月15日（含主营业务分行业表）；生益电子股份有限公司《2026年前三季度业绩预告的自愿性披露公告》2026年10月17日（2026-058）；《关于公司近期生产经营情况的公告》2026年10月24日（2026-064）；沪士电子股份有限公司《2026年前三季度业绩预告》2026年10月15日（2026-072）；《2026年10月20日投资者关系活动记录表》（编号2026-1020-042）；深南电路股份有限公司《2026年第三季度报告》2026年10月23日（2026-065）；浙江华正新材料股份有限公司《2026年第三季度报告》2026年10月23日；瑞芯微电子股份有限公司《2026年第三季度报告》2026年10月27日；三季报预约披露日期取自交易所预约披露安排（沪电股份10月28日、生益科技与生益电子10月30日）；行情与成交数据取自腾讯日线行情接口，截至2026年10月26日收盘。
The premise of this is not valid: October 26 is not the date of the formal third-quarter reports; not one of these three companies' third-quarter reports has come out yet. Shengyi Technology stated in its own October 17 earnings pre-increase announcement that "the scheduled disclosure date is October 30, 2026"; the scheduled disclosure date for Wus Printed Circuit is October 28, and for Shengyi Electronics it is also October 30. What they issued in mid-October were earnings forecasts (Wus on October 15, Shengyi Technology and Shengyi Electronics on October 17); a forecast is not the formal report, and by October 26 it was already 6 to 9 trading days later, so it cannot constitute "realization on the day." The third-quarter reports that actually landed in the market on October 26 were the two from Shennan Circuits and Huazheng New Material on October 23.
What can be checked: the 2026 interim reports disclosed in August, the third-quarter forecasts from mid-October, and the October research records and operating announcements. The answer is not either-or—the demand expectation has not changed, and what was realized was not earnings either; what changed is the market's pricing of "how much longer the gross margins of this chain can hold up."
At the October 26 close, Shengyi Technology was 100.26 yuan, down 9.52%, having touched the limit-down intraday; Shengyi Electronics was 81.09 yuan, down 7.09%; Wus Printed Circuit was 98.90 yuan, down 7.62%. On the same day Nanya New Material fell 12.49%, Huazheng New Material, Jin'an Guoji, Aohong Electronics, and Huashengchang hit limit-down, Jingwang Electronics fell 7.92%, Dongshan Precision fell 7.70%, Xingsen Technology fell 6.33%, Shennan Circuits fell 5.47%, and Pengding Holdings fell 4.49%. On the other side, Victory Giant Technology rose 2.47%, Cambricon rose 3.84%, the Shanghai Composite Index rose 0.19%, and the ChiNext Index fell 1.71%. So it was not the whole chain being indiscriminately sold off; it was the "copper-clad laminate + materials + general PCB" segment that was concentrated selling, while AI boards actually had buyers.
Breaking the third-quarter forecasts down to the single quarter, none of the three is weakening. Shengyi Technology's first-half net profit attributable to parent was 3.287 billion, with 2.129 billion in the second quarter alone; the first-three-quarter forecast is 6.46 billion to 6.87 billion, and subtracting the first half, the third quarter alone is 3.173 billion to 3.583 billion, up 49% to 68% quarter-on-quarter, versus only 1.017 billion in the same quarter last year, up 212% to 252% year-on-year. Wus Printed Circuit's first-half net profit attributable to parent was 2.923 billion, with 1.681 billion in the second quarter alone; the first-three-quarter figure is 5.45 billion to 5.70 billion, and the third quarter alone is 2.527 billion to 2.777 billion, up 50% to 65% quarter-on-quarter and 144% to 168% year-on-year. Shengyi Electronics' first-half net profit attributable to parent was 1.111 billion, with 666 million in the second quarter alone; the first-three-quarter figure is 1.8686 billion to 1.9517 billion, and the third quarter alone is 758 million to 841 million, up 14% to 26% quarter-on-quarter and 30% to 44% year-on-year—its year-on-year growth rate came down because last year's third quarter was itself a high base (584 million in the third quarter of 2025, a 77% jump from that year's second quarter), not because this year's third quarter got worse. For all three, from the second quarter to the third quarter, not one moved down quarter-on-quarter.
So the version that "third-quarter report realization turned into bad news" breaks down at the earnings level itself. Even more telling are the two that have already issued formal reports: Huazheng New Material disclosed its third-quarter report on October 23, with third-quarter net profit attributable to parent of 627 million, up 3044.60% year-on-year, and on October 26 it went straight to limit-down; Shennan Circuits disclosed its third-quarter report on October 23, with quarterly net profit attributable to parent of 1.878 billion, up 94.42% year-on-year, and quarterly revenue of 10.478 billion, up 66.29% year-on-year, and on October 26 it fell 5.47%. The earnings were on the table and explosive, and they still got hit. If the reason for the drop was "the numbers are bad," these two should not have fallen; if the reason for the drop was "the numbers are too good so it's realization," then it is not a demand expectation problem either.
On the demand side, no evidence of weakening can be found in the disclosed documents; instead they are all "tight." Shengyi Electronics' October 24 "Announcement on the Company's Recent Production and Operating Conditions" says verbatim: "At present, production and operating activities, order delivery, major project advancement, and capacity expansion are all proceeding normally, orders are sufficient, the supply chain is stable, and capacity utilization remains at a relatively high level." Wus Printed Circuit's October 20 investor relations activity record says verbatim: "The company's overall capacity continues to operate at a high level, order demand is abundant, and revenue and profit have hit record highs for several consecutive quarters," and the same document also states that core products adapted to 224Gbps have begun small-batch supply and 1.6T switch products have begun mass shipment. Shennan Circuits' third-quarter balance sheet change notes are even more direct: contract liabilities of 363 million, up 109.92% from the beginning of the year, which the company attributes to "an increase in advance receipts"; accounts receivable up 72.53%, due to "an increase in business orders"; inventory up 88.72%, due to "an increase in business scale and material stocking." Even downstream is testifying for this chain—Rockchip's October 27 third-quarter report says "in the third quarter, PCB raw material supply was short, lead times lengthened... delayed PCB delivery affected third-quarter terminal product production, and chip orders lagged and were postponed." PCB is so tight that it is holding up others' shipments; this is not weakening demand.
What exactly was being sold on October 26? What was sold was the top of the gross margin and the 2027 supply, not orders. The industry-segment table in Shengyi Technology's interim report is very clear: revenue from copper-clad laminates and prepreg was 123.57 yi yuan, up 47.74% year-on-year, operating cost up 37.15%, gross margin 29.16%, up 5.47 percentage points year-on-year; revenue from printed circuit boards was 55.19 yi yuan, up 52.03% year-on-year, cost up 44.97%, gross margin 31.20%, up 3.35 percentage points. Revenue ran faster than cost; the price increases were passed through. Broken down to the single quarter it is even steeper: consolidated gross margin was 28.10% in the first quarter and 32.62% in the second quarter, up 4.52 percentage points in one quarter. A gross margin up 4.5 points in one quarter cannot keep rising forever; and the capacity of all three companies is being piled up at the same time — construction in progress: Shengyi Technology from 13.54 yi yuan at the start of the year to 21.41 yi yuan at mid-year (up 58.2%), Shengyi Electronics from 10.21 yi yuan to 15.19 yi yuan (up 48.8%), Wus from 24.60 yi yuan to 35.71 yi yuan (up 45.2%), Shennan from 18.51 yi yuan to 46.30 yi yuan (up 150.17%). When this capacity all comes on stream in 2027, can copper-clad laminates still raise prices? This is what was really being priced on October 26: not "next year's orders will be halved," but "this year's gross margin is the cycle top."
Incidentally, these three should not be treated as the same business. "Shengyi Technology—Shengyi Electronics" are parent and child: one sells copper-clad laminates, the other buys copper-clad laminates to make boards; when copper-clad laminate prices rise, it is revenue for Shengyi Technology and cost for Shengyi Electronics. In second-quarter single-quarter gross margin, Wus rose from 35.63% to 41.28%, up 5.65 percentage points quarter-on-quarter; Shengyi Electronics fell from 35.21% to 33.67%, down 1.53 percentage points quarter-on-quarter. Both carry the "PCB" label, but one is raising prices while the other is being charged higher prices by its upstream. Selling them on the same day in one basket is itself a position action, not a fundamental judgment. Shennan and Huazheng report on October 23, Jingwang on October 27, Wus on October 28, Shengyi Technology and Shengyi Electronics on October 30 — the densest week of third-quarter reports; cutting positions ahead of the window needs no new news. On October 26 Shengyi Technology itself made its first repurchase of 396,300 shares at 99.73 yuan to 102.74 yuan, spending 39.99 million yuan, buying at the day's lowest price.
The strongest argument for the bear side is here: if the third quarter is the gross margin top, then the current "cheapness" is fake. Cyclical stocks have the lowest P/E at the earnings top, because the denominator is the top. Roughly annualizing the midpoint of the third-quarter single quarter times four, Shengyi Technology is about 13.5 billion, against a market cap of 243.5 billion at the October 26 close, 18 times; Wus about 10.6 billion, against 190.3 billion, 18 times; Shengyi Electronics about 3.2 billion, against 69.8 billion, 22 times. Buying a company whose profit doubled year-on-year at 18 times sounds not expensive, but if the denominator shrinks — based on second-quarter revenue of 10.884 billion, every 1 percentage point drop in gross margin cuts gross profit by 109 million; falling from 32.62% back to the full-year 2025 level of 26.47% cuts gross profit by 670 million, roughly 30% of the second quarter's net profit attributable to the parent of 2.129 billion. If the denominator shrinks 30%, 18 times becomes 26 times. The bear side has another layer: CITIC Securities' view on October 26 was that "anxiety about commercialization space growth will continue to constrain the absolute annual scale of AI investment, while deepening the market's vigilance toward an industry inflection point" — this sentence does not land on any financial statement, yet it is the only industrial logic behind this round of de-rating that holds up, and the bear side's most weighty strike.
One more detail: none of the three saw turnover expand on October 26. Shengyi Technology 7.22 billion, versus 7.61 billion the previous trading day; Wus 5.63 billion, versus 5.99 billion the previous day; Shengyi Electronics 1.19 billion, versus 1.15 billion the previous day. Down 7% to 9.5% with no volume coming out is not chips rushing for the door; it is buyers withdrawing and no one catching. This kind of decline corresponds to positions and liquidity, not someone with new news distributing. As of 13:00 on October 27, the three have not sold off again on heavy volume: Wus up 2.9%, Shengyi Technology up 0.4%, Shengyi Electronics down 0.3%; the October 26 red candle has not yet turned into a continuous decline.
To test this explanation, watch four numbers. First, Shengyi Technology's third-quarter report on October 30: if the single-quarter gross margin is still above 32.62%, price increases are still continuing and "the third quarter is the top" is falsified; if it drops more than 1 percentage point quarter-on-quarter, the explanation holds. Second, Wus's third-quarter report on October 28: second-quarter single-quarter gross margin was 41.28%; falling below 40% in the third quarter would mean the pricing power of high-end boards is starting to loosen. Third, revenue rather than profit — Shengyi Technology's second-quarter single-quarter revenue was 10.884 billion; if third-quarter revenue does not grow quarter-on-quarter while profit surges, then the profit is propped up by investment income and price, and its quality should be discounted. Fourth, real evidence on the demand side: if in the fourth quarter copper-clad laminates or electronic cloth see price cuts, or North American cloud companies cut 2027 capital expenditure, then my "demand has not changed" is wrong, because what changed then would be demand.
In one sentence: October 26 was not the third-quarter report realization day; every indicator that can be checked points to tightness, and demand is not broken; what broke is the assumption that "gross margin can still rise 4.5 points in one quarter," plus the supply shadow of 2027 capacity expansion. What fell hardest was the most upstream copper-clad laminates; what rose was the purest AI boards; the ordering is the answer.
Sources: Shengyi Technology Co., Ltd. "Voluntary Disclosure Announcement of Performance Pre-increase for the First Three Quarters of 2026," October 17, 2026 (Announcement No. 2026-057); "Announcement on the Share Repurchase Plan by Way of Centralized Bidding," October 22, 2026 (2026-060); "Announcement on the First Share Repurchase of the Company by Way of Centralized Bidding," October 27, 2026; "2026 Semi-Annual Report," August 15, 2026 (including the table of main business by industry); Shengyi Electronics Co., Ltd. "Voluntary Disclosure Announcement of Performance Pre-forecast for the First Three Quarters of 2026," October 17, 2026 (2026-058); "Announcement on the Company's Recent Production and Operation Status," October 24, 2026 (2026-064); Wus Printed Circuit Co., Ltd. "Performance Pre-forecast for the First Three Quarters of 2026," October 15, 2026 (2026-072); "October 20, 2026 Investor Relations Activity Record Form" (No. 2026-1020-042); Shennan Circuits Co., Ltd. "2026 Third Quarter Report," October 23, 2026 (2026-065); Zhejiang Huazheng New Material Co., Ltd. "2026 Third Quarter Report," October 23, 2026; Rockchip Electronics Co., Ltd. "2026 Third Quarter Report," October 27, 2026; the scheduled disclosure dates for the third quarter reports are taken from the exchanges' scheduled disclosure arrangements (Wus Printed Circuit October 28, Shengyi Technology and Shengyi Electronics October 30); market and trading data are taken from the Tencent daily quotation interface, as of the close on October 26, 2026.