Core Viewpoint - The company has a comprehensive business system for the research, design, production, and sales of power semiconductor chips and devices, and it does not engage in the business of isolated gate driver chips, low-side gate driver chips, or half-bridge/multi-channel gate driver chips [1] Summary by Categories - **Business Operations** - The company possesses an integrated business system covering the entire value chain of power semiconductor chips and devices [1] - The company does not involve itself in isolated gate driver chips, low-side gate driver chips, or half-bridge/multi-channel gate driver chips [1] - **Market Impact** - The impact of U.S. anti-dumping products on the company's profits is currently negligible [1]

Core Viewpoint - The company, JieJie Microelectronics, is a leading player in the thyristor sector, experiencing strong growth in MOSFET product volume and expanding its IDM model across multiple products, which provides a solid foundation for stable operations [1] Group 1 - The company is recognized as a leader in the thyristor field [1] - There is a significant increase in the volume of MOSFET products, indicating robust development momentum [1] - The IDM model is gradually expanding to various products, enhancing operational stability [1] Group 2 - The company is increasing its investment in research and development [1] - Efforts are being made to optimize production processes [1] - The company aims to expand application fields to achieve domestic substitution goals [1]

Core Viewpoint - The company, JieJie Microelectronics, specializes in the research, design, production, and sales of power semiconductor chips and devices, focusing on advanced chip technology and packaging design as its core competitive strengths [1] Company Overview - JieJie Microelectronics operates primarily under an IDM (Integrated Device Manufacturer) model and does not engage in the analog chip sector [1] - The company demonstrates stable operations, providing a solid guarantee for its business performance [1] Strategic Initiatives - The company is increasing its investment in research and development, optimizing production processes, and expanding application areas to achieve the goal of domestic substitution [1]

Group 1 - The company has sufficient orders on hand and does not plan to expand its factory at this time [2]

Group 1 - The company specializes in the research, design, production, and sales of power semiconductor chips and devices [1] - The company has a business model primarily based on the IDM (Integrated Device Manufacturer) model [1] - The company does not engage in the analog chip sector [1]

Group 1 - The company, JieJie Microelectronics (300623.SZ), has indicated that it has sufficient orders on hand and does not plan to expand its factories at this time [1]

Core Insights - The company is collaborating with the Institute of Microelectronics of the Chinese Academy of Sciences and Xi'an University of Electronic Science and Technology to develop semiconductor devices using third-generation semiconductor materials such as SiC and GaN [1] Patent and Research Development - The company currently holds 5 invention patents and 5 utility model patents related to gallium nitride and silicon carbide [1] - Additionally, there are 7 invention patents and 2 utility model patents that are still under application [1] Product Development Status - The company has a small amount of silicon carbide devices undergoing packaging and testing, with this product line still in the research and development phase and not yet in mass production [1]

Core Viewpoint - The company, JieJie Microelectronics, announced that it does not provide guarantees for entities outside its subsidiaries, does not have overdue guarantees, and has not provided guarantees for its controlling shareholders, actual controllers, or their related parties [2] Summary by Categories - **Company Guarantees** - JieJie Microelectronics confirmed that it does not provide guarantees for any entities outside its subsidiaries [2] - The company stated that there are no overdue guarantees [2] - There are no guarantees provided for the controlling shareholders, actual controllers, or their related parties [2]

证券代码：300623 证券简称：捷捷微电 公告编号：2025-051 三、被担保公司的基本情况 公司名称：捷捷微电（南通）科技有限公司 江苏捷捷微电子股份有限公司 关于公司为子公司提供担保的进展公告 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。 一、担保情况概述 江苏捷捷微电子股份有限公司（以下简称"公司"或"捷捷微电"）于 2025 年 4 月 15 日召开了第五届董事会第二十一次会议、第五届监事会第十七次会议、 于 2025 年 5 月 7 日召开 2024 年度股东大会，会议审议通过了《关于公司及子公 司向银行申请授信额度及公司为子公司提供担保的议案》，同意公司、各子公司 向银行申请集团授信总额不超过 30 亿元（授信额度不等于公司及各子公司的实 际使用金额，均以公司实际使用金额为准），授权有效期自公司 2024 年度股东 大会审议通过之日起 12 个月内有效。具体内容详见公司于 2025 年 4 月 16 日、 2025 年 5 月 7 日刊登在中国证监会指定的创业板信息披露网站巨潮资讯网 （www.cninfo.com.cn）的相关公告。 二、担 ...

Core Viewpoint - The company, JieJie Microelectronics, reported that as of September 10, 2025, the total number of shareholders, excluding margin accounts, is 92,288 [2] Summary by Categories - **Company Information** - JieJie Microelectronics has a total of 92,288 shareholders as of the specified date [2] - **Shareholder Data** - The reported figure excludes margin accounts, indicating a focus on retail and institutional investors [2]