证券代码：603002 证券简称：宏昌电子 公告编号：2026-003 宏昌电子材料股份有限公司（以下简称"公司"）股票在 2026 年 2 月 24 日、2026 年 2 月 25 日、2026 年 2 月 26 日连续三个交易日收盘价格涨幅偏离值 累计达 20%以上，根据《上海证券交易所交易规则》的有关规定，属股票交易异 常波动。 二、公司关注并核实的相关情况 公司股票在 2026 年 2 月 24 日、2026 年 2 月 25 日、2026 年 2 月 26 日连 续三个交易日收盘价格涨幅偏离值累计达 20%以上。 中证指数官网 2026 年 2 月 25 日更新数据显示，公司最新滚动市盈率 340.77，公司所处"C39 计算机、通信和其他电子设备制造业"最新滚 动市盈率 55.71，公司市盈率显著高于行业平均水平。公司最近一个交 易日换手率 9.75%，高于前期水平。敬请广大投资者注意二级市场交易 风险。 经公司自查并通过向控股股东、实际控制人书面发函查证，截至本公告 披露日，不存在应披露而未披露的重大事项或重大信息。 针对公司股票交易异常波动的情况，公司对有关事项进行了核查，并发函问 询了公司控 ...

Core Viewpoint - Hongchang Electronics announced that its stock price experienced an abnormal fluctuation, with a cumulative increase of over 20% in closing prices over three consecutive trading days from February 24 to February 26, 2026 [1] Group 1 - The company disclosed that the abnormal trading activity is in accordance with the Shanghai Stock Exchange trading rules [1] - A self-examination was conducted by the company, and it confirmed that there are no undisclosed significant matters or information as of the date of the announcement [1] - The company communicated with its controlling shareholder and actual controller through written inquiries to verify the absence of undisclosed information [1]

宏昌电子材料股份有限公司 控股股东有关股票交易异常波动的回复函 宏昌电子材料股份有限公司（股票简称"宏昌电子"，股票代码 603002），股票交易出现异常波动。 广州宏仁电子工业有限公司作为"宏昌电子"控股股东，专此回 复：截至目前，控股股东不存在对宏昌电子股票交易价格可能产生影 响的应披露而未披露的重大信息，包括但不限于重大资产重组、股份 发行、重大交易类事项、业务重组、股份回购、股权激励、破产重整、 重大业务合作、引进战略投资者等重大事项。 控股股东：广州宏仁电子工业有限公司 2026 年 2 月 26 日 宏昌电子材料股份有限公司 控股股东有关股票交易异常波动的回复函 宏昌电子材料股份有限公司（股票简称"宏昌电子"，股票代码 603002），股票交易出现异常波动。 Epoxy Base Investment Holding LTD. 作为"宏昌电子"控股 股东，专此回复：截至目前，控股股东不存在对宏昌电子股票交易价 格可能产生影响的应披露而未披露的重大信息，包括但不限于重大资 产重组、股份发行、重大交易类事项、业务重组、股份回购、股权激 励、破产重整、重大业务合作、引进战略投资者等重大事项。 控股股东： ...

Core Viewpoint - The stock of Hongchang Electronics experienced an abnormal trading fluctuation, with a cumulative closing price increase of over 20% across three consecutive trading days from February 24 to February 26, 2026 [1] Company Summary - Hongchang Electronics conducted a self-examination and confirmed that there are no undisclosed significant matters or information as of the announcement date [1] - The company's production and operational conditions remain normal, with no significant changes in the internal or external operating environment [1] - There are no major events such as asset restructuring, share issuance, significant transactions, business restructuring, share buybacks, equity incentives, bankruptcy reorganization, major business collaborations, or introduction of strategic investors [1] - During the period of stock price fluctuation, there were no reported media articles, market rumors, or trending concepts that could have influenced the stock price [1] - Company directors, senior management, controlling shareholders, and actual controllers did not engage in buying or selling the company's stock during the price fluctuation period [1] Industry Summary - As of February 25, 2026, the latest rolling price-to-earnings (P/E) ratio for Hongchang Electronics is 340.77, significantly higher than the industry average rolling P/E ratio of 55.71 for the "C39 Computer, Communication, and Other Electronic Equipment Manufacturing" sector [1] - The turnover rate for the most recent trading day was 9.75%, which is higher than previous levels [1]

Group 1 - XianDao Intelligent is a key player in high-end intelligent equipment, focusing on precision manufacturing and automation solutions, particularly in the PCB industry [1] - The company provides high-precision cutting, forming, and testing automation equipment for the PCB industry, enhancing production efficiency and yield for high-end products [1] - With the acceleration of AI server and data center construction, the demand for high-end processing equipment in the PCB industry continues to rise [1] Group 2 - Fangzheng Technology has a state-owned background and long-term industry accumulation in the electronic information field, focusing on the R&D, production, and sales of printed circuit boards (PCBs) [2] - The company is upgrading its PCB production lines, emphasizing high-layer and high-frequency boards to meet the demands of 5G communication and industrial internet [2] - Fangzheng Technology maintains a stable market position in the communication and industrial control PCB sectors, providing reliable PCB supply to downstream equipment manufacturers [2] Group 3 - Helitai is a privately held company with a complete layout in electronic components and display modules, focusing on FPC flexible circuit boards and rigid PCBs [3] - The company invests in automotive PCBs and flexible boards, enhancing performance to meet the increasing electronic penetration in new energy vehicles [3] - Helitai leverages its vertically integrated supply chain to optimize cost control and product yield, aligning with the trends of lightweight and high-reliability terminal devices [3] Group 4 - Nord shares focus on copper-based new materials and is a significant player in the domestic copper foil industry, with high-precision electrolytic copper foil as a core product [4] - The company is investing in high-end PCB copper foil R&D and production, optimizing thickness uniformity and surface roughness to meet market demands [4] - Nord shares are deeply integrated with the PCB upstream supply chain, supporting material upgrades in the industry [4] Group 5 - Beifang Copper Industry, controlled by local state assets, has integrated resource and processing advantages, focusing on cathode copper, copper rods, and copper foil [5] - The company is enhancing copper material purity and processing precision, developing ultra-thin PCB copper foil to meet stringent requirements for HDI and high-layer boards [5] - Beifang Copper Industry provides stable, high-quality basic material supply to the PCB industry, supporting the domestic material supply chain [5] Group 6 - Tongling Nonferrous Metals is a leading copper smelting and processing enterprise in China, with a complete industry chain from mining to processing [6] - The company focuses on PCB copper foil, which is crucial for the production of printed circuit boards, and is increasing its investment in high-end copper foil products [6] - Tongling Nonferrous Metals is also developing recycled copper business to promote green manufacturing in line with the PCB industry's low-carbon development trend [7] Group 7 - Huagong Technology, with strong technical research and development capabilities, provides laser processing equipment and high-end manufacturing solutions for the PCB industry [8] - The company’s products meet the high-precision processing needs of communication, server, and automotive electronics PCBs, benefiting from the expansion of the PCB industry driven by AI computing power [8][9] - Huagong Technology is positioned favorably in the domestic PCB equipment market, contributing to the industry's manufacturing level and production efficiency [8] Group 8 - Shenghong Technology specializes in high-end PCB products, including HDI and high-frequency boards, serving major clients in various sectors [9] - The company maintains high production efficiency and product stability, with a strong order backlog driven by the demand for AI servers [9] - Shenghong Technology is advancing its automotive PCB certification and production expansion, solidifying its position in the domestic PCB market [9] Group 9 - Deep Kangjia A is a state-owned enterprise with a diversified technology platform, focusing on high-end PCB products for communication and industrial control applications [10] - The company leverages group resources to optimize its PCB business structure and enhance collaboration with key downstream clients [10] - Deep Kangjia A is positioned to benefit from the recovery of consumer electronics and the advancement of computing infrastructure, maintaining stable growth in the PCB sector [10] Group 10 - Guanjie Technology is a leading global player in the display field, extending its business into PCB and electronic components [11] - The company’s PCB products align with trends towards lightweight and high integration, supporting the growing demand in smart displays and automotive applications [11] - Guanjie Technology optimizes its PCB business quality through vertical integration, enhancing its competitive position in the electronic components market [11] Group 11 - Tiantong Co., Ltd. specializes in soft magnetic materials and high-end equipment, providing precision processing and testing equipment for the PCB industry [12] - The company’s products enhance circuit stability and anti-interference capabilities, supporting the production of high-end PCBs [12] - Tiantong Co., Ltd. benefits from its dual focus on materials and equipment, providing essential support to the PCB industry [12] Group 12 - Huhua Electric is a leading enterprise in the PCB industry, focusing on high-reliability PCB products for communication and automotive applications [13] - The company has a strong technical foundation in high-frequency and high-speed PCB fields, supplying major global communication and automotive clients [13] - Huhua Electric is positioned to expand its high-end order volume and production capacity, maintaining a leading position in the global PCB market [13][14] Group 13 - Xingsen Technology is a leader in PCB samples and small batch production, serving a wide range of R&D clients across various sectors [15] - The company’s rapid delivery capabilities and flexible production model are industry-leading, making it a crucial supply chain partner during product development stages [15] - Xingsen Technology is expanding its high-end PCB production capacity, tapping into the server and automotive electronics markets [15] Group 14 - Dongshan Precision is a significant player in precision manufacturing, leading in FPC and PCB sectors [16] - The company’s FPC products are widely used in smart terminals and automotive applications, driving its core growth [16] - Dongshan Precision is optimizing its product structure to maintain strong competitiveness in the flexible circuit board and automotive PCB markets [16] Group 15 - Liyuan Information is a leading distributor of electronic components, connecting upstream manufacturers with downstream electronic manufacturers [17] - The company provides a comprehensive supply chain and technical support for PCB manufacturers, playing a critical role in the industry [17] - Liyuan Information is enhancing its collaboration with the PCB supply chain, improving supply chain efficiency and cost control [17] Group 16 - China Jushi is a global leader in the fiberglass industry, with a focus on electronic-grade fiberglass for PCB applications [18] - The company’s products are essential for PCB performance, meeting the demands of high-frequency and high-speed applications [18] - China Jushi is positioned to support the domestic material supply chain and play a vital role in the high-end material upgrade process [18] Group 17 - Zhongtung High-tech specializes in hard alloys and tungsten materials, providing critical consumables for PCB processing [19] - The company’s products meet high standards for hardness, wear resistance, and precision, supporting the production of high-end PCBs [19] - Zhongtung High-tech is leveraging its resource and technology advantages to maintain a significant position in the PCB specialized hard alloy materials market [19] Group 18 - Zhao Chi Co., Ltd. focuses on smart terminals and semiconductor products, with a strong PCB business for consumer electronics and smart home applications [20] - The company’s vertical integration allows for collaborative design and production, enhancing competitiveness in the PCB market [20] - Zhao Chi Co., Ltd. is optimizing its PCB production capabilities to meet the growing demand in consumer electronics and smart home sectors [20] Group 19 - Dazhu Laser is a leading domestic laser equipment manufacturer, providing essential laser processing solutions for the PCB industry [21] - The company’s laser equipment is crucial for high-end PCB production, meeting the precision requirements of advanced applications [21] - Dazhu Laser is benefiting from the growing demand for high-end PCB production driven by AI computing power [21] Group 20 - Zhongke Electric is a privately held company with expertise in electromagnetic equipment and new materials, providing automation and thermal treatment equipment for the PCB industry [22] - The company’s products enhance PCB stability and consistency, supporting the industry's shift towards automation and intelligence [22] - Zhongke Electric is expanding its presence in the electronic manufacturing equipment sector, providing reliable support for the PCB supply chain [22] Group 21 - Hezhu Intelligent is a provider of high-end forming equipment and automation solutions for the PCB industry [23] - The company’s equipment is critical for the production of high-layer and thick copper boards, directly impacting PCB reliability and flatness [23] - Hezhu Intelligent is positioned to benefit from the growing demand for PCB production equipment driven by automotive electronics and server applications [23] Group 22 - Huace Testing is a leading third-party testing enterprise, providing comprehensive reliability and environmental testing services for the PCB industry [24] - The company’s services are essential for ensuring PCB quality in communication, automotive, and server applications [24] - Huace Testing is maintaining a leading position in the PCB testing sector, supporting industry quality assurance amid increasing regulatory demands [24] Group 23 - Sichuan Jiuzhou is a significant player in the military and electronic information sectors, focusing on high-reliability PCBs for communication and industrial control applications [25] - The company’s PCB products are known for their high yield and reliability, supported by a military-grade quality control system [25] - Sichuan Jiuzhou is positioned to meet the growing demand for high-reliability PCBs driven by new infrastructure and specialized fields [25] Group 24 - Jin Xin Nuo specializes in RF communication and high-speed interconnect products, focusing on high-frequency PCBs for communication and automotive applications [26] - The company’s products are designed to meet the demands of 5G and AI computing, with low loss and high stability [26] - Jin Xin Nuo is leveraging its expertise in RF and PCB to maintain competitiveness in the communication interconnect supply chain [26] Group 25 - Rongda Photosensitive is a leading manufacturer of PCB photosensitive inks and wet process materials, essential for PCB production [27] - The company’s products directly impact PCB precision and reliability, covering the entire PCB production process [27] - Rongda Photosensitive is positioned to benefit from the growing demand for high-precision photosensitive inks in the PCB industry [27] Group 26 - Hongchang Electronics focuses on epoxy resins and electronic chemicals, providing core materials for PCB manufacturing [28] - The company’s high-purity epoxy resins meet the demands of high-frequency and high-temperature PCBs, supplying major domestic manufacturers [28] - Hongchang Electronics is expanding its production capacity for high-end electronic-grade resins, supporting the domestic material supply chain [28] Group 27 - Dongcai Technology is a key player in the new materials sector, focusing on functional materials for PCB applications [29] - The company’s products are designed to meet the high-performance requirements of modern PCBs, supporting the domestic supply chain [29] - Dongcai Technology is leveraging its technical and production advantages to expand its presence in the PCB materials market [29]

Group 1 - The company announced that its stock price experienced an abnormal fluctuation, with a cumulative increase of over 20% during the trading days from February 24 to 26, 2026 [1] - The latest rolling price-to-earnings (P/E) ratio of the company is 340.77, significantly higher than the industry average of 55.71 [1] - The turnover rate on the most recent trading day was 9.75%, which is above the previous levels [1] Group 2 - The company conducted a self-examination and verified with its controlling shareholder, confirming that there are no undisclosed significant matters [1] - Investors are reminded to pay attention to trading risks [1]

Group 1 - The stock price of Macrotronics increased by 0.87%, reaching a new high of 11.64 CNY per share [1] - The total market capitalization of the company surpassed 13.2 billion CNY [1] - The trading volume amounted to 361 million CNY [1]

Core Viewpoint - The copper-clad laminate sector is experiencing strong performance, with significant gains in stock prices for companies such as Xianfeng Holdings, Tongyu New Materials, Shengyi Technology, and Hongchang Electronics [1] Group 1 - Xianfeng Holdings has reached the daily limit increase in stock price [1] - Tongyu New Materials, Shengyi Technology, and Hongchang Electronics are among the top gainers in the sector [1]

Group 1 - The core point of the article is that Hongchang Electronics (603002.SH) has seen its stock price increase by 0.87%, reaching a historical high of 11.640 yuan, with a total market capitalization of 13.201 billion yuan [1]

Core Viewpoint - The PCB (Printed Circuit Board) sector in the A-share market has become a focal point, with significant price increases across the entire industry chain, indicating strong capital inflow and investor interest. Group 1: Company Highlights - **Mingyang Circuit (300739.SZ)**: Latest stock price is 29.30 CNY, with a daily increase of +17.06%. The company focuses on small-batch PCB research and production, covering HDI boards, thick copper boards, and high-frequency boards, widely used in various sectors including industrial control and AI [1]. - **Dingtai High-Tech (301377.SZ)**: Latest stock price is 212.50 CNY, with a daily increase of +11.75%. It is a global leader in PCB drilling needles, providing specialized consumables for PCB processing and serving major clients like Shenzhen South Circuit [2]. - **Zhongfu Circuit (300814.SZ)**: Latest stock price is 91.00 CNY, with a daily increase of +11.42%. The company offers high-reliability, customized PCB products, focusing on communication and automotive electronics [3]. - **Jiuri New Materials (688199.SH)**: Latest stock price is 30.85 CNY, with a daily increase of +11.37%. It is the largest domestic supplier of photoinitiators, essential for PCB ink, aiding in the PCB photolithography process [4]. - **Delong Laser (688170.SH)**: Latest stock price is 50.80 CNY, with a daily increase of +9.58%. The company provides laser precision micro-processing equipment for PCB and FPC applications [5]. Group 2: Additional Company Insights - **Nord Shares (600110.SH)**: Latest stock price is 8.17 CNY, with a daily increase of +9.96%. The company specializes in the research, production, and sales of electrolytic copper foil, crucial for the PCB industry [6]. - **Zhongtung High-Tech (000657.SZ)**: Latest stock price is 58.83 CNY, with a daily increase of +10.00%. Its subsidiary is a leader in PCB micro-drilling, with advanced technology and leading production capacity [8]. - **Dongcai Technology (601208.SH)**: Latest stock price is 31.74 CNY, with a daily increase of +10.02%. The company focuses on electronic-grade resin materials, essential for high-frequency PCBs, supplying major clients like NVIDIA and Huawei [9]. - **Shenghong Technology (300476.SZ)**: Latest stock price is 292.58 CNY, with a daily increase of +9.31%. It is among the top PCB manufacturers in China, specializing in high-precision multi-layer and HDI boards [10]. - **Changhai Shares (300196.SZ)**: Latest stock price is 22.10 CNY, with a daily increase of +9.03%. The company produces PCB electronic felt, a key material for CEM-3 copper-clad laminates [11]. - **Hongchang Electronics (603002.SH)**: Latest stock price is 11.54 CNY, with a daily increase of +8.97%. It is a leading company in electronic-grade epoxy resin, providing essential materials for PCB production [12]. - **Copper Crown Copper Foil (301217.SZ)**: Latest stock price is 48.82 CNY, with a daily increase of +8.61%. The company is a leader in high-performance electronic copper foil, with significant production capacity [13]. - **Sanfu New Technology (688359.SH)**: Latest stock price is 84.30 CNY, with a daily increase of +8.02%. The company focuses on PCB surface treatment technologies, serving major PCB manufacturers [14]. - **Dazhu Laser (002008.SZ)**: Latest stock price is 63.38 CNY, with a daily increase of +7.73%. The company provides comprehensive solutions for PCB manufacturing equipment [15].