证券代码：688629 证券简称：华丰科技 公告编号：2025-051 四川华丰科技股份有限公司 关于变更 2025 年度审计机构的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 重要内容提示： 拟聘任的会计师事务所名称：信永中和会计师事务所（特殊普通合伙） （以下简称"信永中和"） 原聘任的会计师事务所名称：北京德皓国际会计师事务所（特殊普通合 伙）（以下简称"北京德皓国际"） 成立日期：2012 年 3 月 2 日 组织形式：特殊普通合伙企业 注册地址：北京市东城区朝阳门北大街 8 号富华大厦 A 座 8 层 变更会计师事务所的简要原因及前任会计师的异议情况：根据中华人民 共和国财政部、国务院国有资产监督管理委员会、中国证券监督管理委员会印发 的《国有企业、上市公司选聘会计师事务所管理办法》等相关规定，综合考虑公 司业务发展及未来审计工作的需要，经审慎评估及友好沟通，公司拟变更会计师 事务所。公司已就变更会计师事务所有关事宜与前任会计师事务所北京德皓国际 进行充分沟通，北京德皓国际对本次变更事项无异议。 本事项尚 ...

证券代码：688629 证券简称：华丰科技 公告编号：2025-052 四川华丰科技股份有限公司 关于增加经营范围、取消监事会、调整董事会、修订 《公司章程》、修订及制定公司部分治理制度的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 四川华丰科技股份有限公司（以下简称"公司"）于 2025 年 12 月 11 日召开 第二届董事会第十八次会议，审议通过了《关于增加经营范围、取消监事会、调 整董事会及修订<公司章程>的议案》《关于修订及制定公司部分治理制度的议案》。 公司于同日召开第二届监事会第十四次会议，审议通过了《关于取消监事会的议 案》。上述议案及议案的部分子议案尚需提交公司股东大会审议，现将具体情况公 告如下： 四、修订《公司章程》的情况 基于上述情况，以及为全面贯彻落实最新法律法规及规范性文件要求，根据 《公司法》《上市公司章程指引》等法律法规和规范性文件，拟对《公司章程》中 的相关条款进行修订，具体修订情况详见附件。 上述事项尚需提交公司股东大会审议通过后生效，同时，董事会提请股东大 会授权公司管理层指定 ...

证券代码：688629 证券简称：华丰科技 公告编号：2025-056 四川华丰科技股份有限公司 关于召开2025年第三次临时股东大会的通知 本公司董事会及全体董事保证公告内容不存在任何虚假记载、误导性陈述或 者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 重要内容提示： 一、 召开会议的基本情况 （一） 股东大会类型和届次 2025年第三次临时股东大会 （二） 股东大会召集人：董事会 （三） 投票方式：本次股东大会所采用的表决方式是现场投票和网络投票相结 合的方式 （四） 现场会议召开的日期、时间和地点 召开日期时间：2025 年 12 月 29 日 14 点 00 分 召开地点：四川省绵阳市经开区三江大道 118 号华丰科技会议室 （五） 网络投票的系统、起止日期和投票时间。 网络投票系统：上海证券交易所股东大会网络投票系统 网络投票起止时间：自2025 年 12 月 29 日 至2025 年 12 月 29 日 采用上海证券交易所网络投票系统，通过交易系统投票平台的投票时间为股 1 股东大会召开日期：2025年12月29日 本次股东大会采用的网络投票系统：上海证券交易所股东大会网络投票 ...

四川华丰科技股份有限公司 第二届监事会第十四次会议决议公告 本公司监事会及全体监事保证本公告内容不存在任何虚假记载、误导性陈 述或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 四川华丰科技股份有限公司（以下简称"公司"）第二届监事会第十四次 会议于 2025 年 12 月 11 日以通讯的方式召开。会议通知已于 2025 年 12 月 8 日 以书面或邮件的方式送达各位监事。本次会议应出席监事 3 人，实际出席监事 3 人。会议由监事会主席王道光主持。会议召开符合有关法律、法规、规章和 《四川华丰科技股份有限公司章程》（以下简称"《公司章程》"）的规定。 经与会监事认真审议，以记名投票方式表决通过了如下决议： 证券代码：688629 证券简称：华丰科技 公告编号：2025-055 一、 审议通过《关于变更 2025 年度审计机构的议案》 公司监事会认为：信永中和会计师事务所（特殊普通合伙）具备为上市公 司提供审计服务的专业能力，能够满足公司 2025 年度财务报告审计与内部控制 审计的工作需求，本次变更会计师事务所的理由合理恰当，不存在损害公司及 股东特别是中小股东利益的情形。同意聘任信永 ...

Core Viewpoint - The company announced the resignation of non-independent director Xu Jian due to adjustments in the corporate governance structure, effective immediately upon delivery of the resignation report to the board [1] Group 1 - Xu Jian will no longer hold any position within the company following his resignation [1] - As of the date of the announcement, Xu Jian does not hold any shares in the company and has no unfulfilled commitments [1] - The resignation is in accordance with relevant laws, regulations, and the revised articles of association [1]

Core Viewpoint - The company is developing specialized optical connectors and optical module series products that can partially be applied in high-speed optical module core devices and optical interconnect system transmission fields [2] Group 1: Product Development - The company is currently in the market layout stage for optical connectors, and its related products have not yet formed a significant market share [2]

Group 1 - The core viewpoint of the article is that Huafeng Technology (688629.SH) is developing special optical connectors and optical module series products, with foundational technology applicable to high-speed optical module core devices and optical interconnect system transmission fields [1] - The company is currently in the market layout stage for optical connectors, and the overall market share of related products has not yet formed a scale [1]

Group 1 - The core product of the company includes optical and electrical connectors as well as cable components [1] - The company currently does not have DAC high-speed cable products or technological reserves [1] - The company will continue to track industry frontiers and adapt to market demands through technological innovation [1]

Group 1 - The core product of the company includes optical and electrical connectors as well as cable components [1] - The company currently does not have DAC high-speed cable products or technological reserves [1] - The company will continue to track industry frontiers and adapt to market demands through technological innovation [1]

Group 1: Company Overview - Shengyi Technology (600183) focuses on high-frequency and high-speed copper-clad laminates and bonding sheets for the commercial aerospace sector, providing core materials for satellite communication equipment and rocket electronic control systems, with over 30 years of technology accumulation in high-frequency materials [1][19] - Guangqi Technology (002625) is a leader in metamaterials for aerospace applications, developing lightweight and high-strength structural components that reduce the weight of aerospace equipment by over 30%, enhancing stealth and extreme environment capabilities [2][20] - China Satellite Communications (601698) is the only domestic operator of commercial communication satellites, managing 18 high-orbit satellites and leading the GW constellation project for 13,000 low-orbit satellites, covering over 95% of the globe [3][21] Group 2: Product Applications - Jingwang Electronics (603228) provides high-density interconnect (HDI) printed circuit boards and flexible circuit boards for commercial aerospace, with applications in satellite navigation systems and rocket measurement and control equipment [4][22] - Sanan Optoelectronics (600703) specializes in the research and production of GaN (gallium nitride) semiconductors, which are critical components for rocket engine control systems and satellite communication payloads, significantly improving energy efficiency and reliability [5][22] - China Aerospace Science and Technology Corporation (600118) is the only listed platform of the Aerospace Science and Technology Group, focusing on the research, manufacturing, and integration of commercial satellites, holding the largest market share in small satellites in China [7][25] Group 3: Emerging Technologies - Guodun Quantum (688027) applies quantum communication technology in commercial aerospace, developing satellite-based quantum communication payloads and quantum key distribution devices to ensure secure data transmission [8][26] - Aerospace Electronics (600879) has a dominant market share in rocket measurement and control systems, with over 90% market share, and provides core measurement and control solutions for private rocket companies [9][27] - Light Library Technology (300620) develops core optical communication devices for satellite laser communication systems, enabling high-speed, low-loss data transmission between satellites [10][28] Group 4: Industry Trends - Huafeng Technology (688629) provides high-reliability connectors and cable components for commercial aerospace, meeting the needs of rocket structure connections and satellite payload integration [13][32] - Aojie Technology (688220) focuses on satellite communication baseband chips, enabling efficient data exchange between satellites and ground terminals, supporting new applications like direct satellite connections for mobile phones [14][33] - Zhongke Xingtou (688568) offers space-based big data processing and application services, leveraging its GEOVIS digital earth platform for diverse data services in agriculture, urban planning, and disaster warning [15][34]