关于全资子公司北京国联万众半导体科技有限公司使用部分 证券代码：003031 证券简称：中瓷电子 公告编号：2025-110 河北中瓷电子科技股份有限公司 闲置募集资金进行现金管理到期赎回的公告 本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有虚 假记载、误导性陈述或重大遗漏。 三、备查文件 1、北京银行通用业务回执。 北京国联万众半导体科技有限公司使用闲置募集资金 20,000 万元购买了单位 定期存款。产品起息日为 2025 年 5 月 22 日。具体内容详见公司于 2025 年 5 月 27 日在《证券时报》《上海证券报》及巨潮资讯网（http://www.cninfo.com.cn） 披露的《关于全资子公司北京国联万众半导体科技有限公司使用部分闲置募集资 金进行现金管理的进展公告》（公告编号：2025-052）。 截至本公告日，国联万众已如期赎回上述理财产品，赎回本金 20,000 万元， 获得理财收益 153.39 万元。本金及理财收益已全额存入募集资金专户。 二、本公告日前十二个月内公司使用闲置募集资金进行现金管理的具体情况 如下（含本次公告所涉及现金管理产品）： 单位：人民币万元 ...

Core Viewpoint - The stock of Zhongci Electronics experienced a slight increase of 0.35% on November 27, closing at 52.13 yuan, with a notable block trade occurring [1] Group 1: Stock Performance - Zhongci Electronics closed at 52.13 yuan, reflecting a 0.35% increase [1] - Over the last five trading days, the stock has seen a cumulative increase of 0.58% [1] Group 2: Trading Activity - A single block trade was recorded, with a total volume of 60,000 shares and a transaction amount of 3.1278 million yuan [1] - The transaction price for the block trade was 52.13 yuan, with a premium rate of 0.00% [1] - In the past three months, there has been one block trade for the stock, totaling 3.1278 million yuan [1] Group 3: Capital Flow - The main capital flow indicates a net outflow of 1.44 million yuan [1]

Core Viewpoint - The article highlights the significant dependency of China's high-end manufacturing on Japan for critical strategic new materials, particularly in the semiconductor and advanced manufacturing sectors, emphasizing the risks posed by geopolitical tensions and supply chain vulnerabilities [2][4]. Group 1: Dependency on Japanese Core New Materials - Japan holds a monopolistic position in semiconductor materials, high-end polymers, and electronic chemicals, with China's dependency exceeding 50% in several key categories, and nearly 100% in some high-end areas [4][6]. - The complexity of semiconductor manufacturing processes means that Japan dominates the supply of critical materials like photoresists and silicon wafers, with global market shares consistently above 60% [6][9]. Group 2: Semiconductor Core Materials - **Photoresists**: China has an overall import dependency of about 90%, with high-end photoresists being 100% reliant on Japan. Major suppliers include JSR, Tokyo Ohka, Shin-Etsu Chemical, and Fujifilm, which control 92% of the high-end market [7]. - **12-inch Silicon Wafers**: The import dependency is around 90%, with Japan supplying 58%. Key players like Shin-Etsu Chemical and SUMCO dominate over 60% of the market [9]. - **High-Purity Ruthenium Targets**: The import dependency is 98%, with Japan's JX Metals and TOSOH holding a significant market share. Domestic production is limited to lower purity levels [12]. Group 3: High-End Polymer Materials - Japan leads the high-end market for electronic-grade polyimide films, with an import dependency of 85% for overall polyimide materials, and 90% for high-end applications [19]. - **Optical-grade PET Films**: The import dependency is 75%, with Japan supplying 100% of high-end films used in MLCCs [23]. Group 4: Other Key Materials in Electronics - **Sputtering Targets**: The import dependency is approximately 95%, with Japan's JX Metals and Nippon Mining controlling 60% of the market [27]. - **High-Purity Electronic Gases**: The import dependency is 70%, with Japan's Taiyo Nippon Sanso holding a 40% market share [31]. Group 5: Hydrogen Energy and Fuel Cell Key Materials - **High-End Carbon Carrier Materials**: The overall import dependency is 85%, with Japan's TOSOH dominating the market [35]. - **Fuel Cell Platinum-based Catalysts**: The import dependency is 78%, with significant reliance on European suppliers [107]. Group 6: Aerospace and High-End Manufacturing Key Materials - **High-Temperature Alloys**: The import dependency is 90%, with major suppliers from the US and Europe completely dominating the market [80]. - **Carbon Fiber**: The import dependency is 85%, with Japan and the US leading the high-end market [86]. Group 7: New Energy and Electronics Key Materials - **High-End Lithium-Ion Battery Separators**: The import dependency is 70%, with Japan's Asahi Kasei and Toray leading the market [94]. - **Ultra-Thin Copper Foils**: The import dependency is 80%, with Japan's JX Copper and Mitsui Mining dominating the supply [98].

Core Viewpoint - Zhongci Electronics reported that as of November 10, 2025, the total number of shareholders reached 23,537 households (consolidated) [2] Summary by Category - **Company Information** - Zhongci Electronics has a total of 23,537 shareholders as of the specified date [2] - **Investor Engagement** - The company responded to investor inquiries on an interactive platform, indicating active communication with its shareholders [2]

Core Viewpoint - Zhongci Electronics (003031) is focusing on providing high-quality gallium nitride (GaN) RF chips and devices for global communication equipment suppliers, supporting users in model upgrades and network enhancements [1] Group 1: Company Developments - The subsidiary, Bowei Company, has developed a series of GaN RF chips and devices tailored for 5G-A models and solutions, achieving industrialization [1] - Bowei Company holds a leading market share in China for its GaN RF chip and device products [1]

源律师事务所 A YUAN LAW OFFICES 北京 BEIJING·上海 SHANGHAI·深圳 SHENZHEN·香港 HONGKONG·广州 GUANGZHOU·西安 XI'AN 致:河北中瓷电子科技股份有限公司 北京市嘉源律师事务所 关于河北中瓷电子科技股份有限公司 2025 年第四次临时股东会的 法律意见书 嘉源律师事务所 JIA YUAN LAW OFFICES 西城区复兴门内大街 158 号远洋大厦 4 楼 中国·北京 二〇二五年十一月 在本法律意见书中,本所律师仅对本次股东会的召集、召开程序、出席会议 人员资格、召集人资格、会议表决程序、表决结果等所涉及的有关法律问题发表 意见,不对本次股东会审议的议案内容以及该等议案所表述的事实或数据的真实 性及准确性发表意见。 北京市嘉源律师事务所 关于河北中瓷电子科技股份有限公司 2025 年第四次临时股东会的 法律意见书 嘉源(2025)-04-815 北京市嘉源律师事务所(以下简称"本所")接受河北中瓷电子科技股份有限 公司(以下简称"公司")的委托,根据《中华人民共和国公司法》(以下简称"《公 司法》"）《上市公司股东会规则》（以下简称"《股东 ...

证券代码：003031 证券简称：中瓷电子 公告编号：2025-109 河北中瓷电子科技股份有限公司 2025年第四次临时股东会决议公告 本公司及董事会全体成员保证信息披露内容的真实、准确和完整，没有虚 假记载、误导性陈述或重大遗漏。 特别提示： 1. 本次股东会无增加、变更、否决议案的情形； 2. 本次股东会不涉及变更前次股东会决议； 3. 本次股东会采取现场投票和网络投票相结合的表决方式。 一、会议召开和出席情况 （一）会议召开情况 1. 本次股东会的召开时间： （2）网络投票时间：2025年11月13日（星期四） 其中，通过深圳证券交易所交易系统进行网络投票的具体时间为：2025 年 11月13日（星期四）上午9:15-9:25 9:30-11:30，下午13:00-15:00； 通过深圳证券交易所互联网投票系统进行网络投票的具体时间为：2025 年 11月13日（星期四）9:15-15:00 期间的任意时间。 2. 现场会议召开地点：河北省石家庄市鹿泉经济开发区昌盛大街 21 号。 3. 召开方式：本次股东会采取现场投票与网络投票相结合的方式。 4. 召集人：公司董事会 5. 现场会议主持人：董事长卜 ...

Group 1 - The company, Zhongci Electronics (003031.SZ), stated that it is currently not involved in the field of quantum communication [1]

Core Viewpoint - Zhongci Electronics (003031.SZ) is focusing on providing high-quality gallium nitride (GaN) RF chips and devices for global communication equipment suppliers, supporting users in model upgrades and network enhancements [1] Group 1: Company Developments - The subsidiary, Bowei Company, has developed a series of GaN RF chips and devices tailored for 5G-A models and solutions, achieving industrialization [1] - Bowei Company holds a leading market share domestically in the GaN RF chip and device sector [1]

Core Insights - Zhongci Electronics reported that as of October 31, 2025, the total number of shareholders is 22,836 households (consolidated) [2] Company Summary - Zhongci Electronics is actively engaging with investors through interactive platforms, indicating a focus on transparency and communication [2] - The company has provided specific shareholder data, which may reflect its growth and investor interest [2]