Securities Code: 002366 Securities Abbreviation: Rongfa Nuclear Power Announcement No.: 2026-016 Rongfa Nuclear Power Equipment Co., Ltd. Announcement on Providing Guarantees for Subsidiaries The Company and all members of the Board of Directors guarantee the truthfulness, accuracy, and completeness of the information disclosed, and are free of false records, misleading statements, or significant omissions. I. Overview of Guarantee Situation Rongfa Nuclear Power Equipment Co., Ltd. (hereinafter referred to as the "Company") held the third meeting of the seventh Board of Directors on April 23, 2026, which reviewed and approved the "Proposal on Providing Guarantees for Subsidiaries," agreeing to: (1) The Company provide a guarantee for its first-level wholly-owned subsidiary, Yantai Taihai Manur Nuclear Power Equipment Co., Ltd. (hereinafter referred to as "Yantai Taihai Nuclear Power"), with an estimated annual amount not exceeding RMB 25 billion. (2) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its first-level wholly-owned subsidiary, Deyang Rongfa Energy Equipment Co., Ltd. (hereinafter referred to as "Deyang Rongfa"), with an estimated annual amount not exceeding RMB 4 billion. (3) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its first-level wholly-owned subsidiary, Qingdao Rongfa Assembly Technology Support Center Co., Ltd. (hereinafter referred to as "Rongfa Assembly"), with an estimated annual amount not exceeding RMB 0.5 billion. (4) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its second-level controlled subsidiary, Shandong Rongfa Yuhai Intelligent Equipment Co., Ltd. (hereinafter referred to as "Rongfa Yuhai"), based on its shareholding ratio, with an estimated annual amount not exceeding RMB 12 billion. (5) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its second-level controlled subsidiary, Yantai Manur Nuclear Power Testing Technology Co., Ltd. (hereinafter referred to as "Manur Testing"), with an estimated annual amount not exceeding RMB 0.5 billion. (6) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its second-level controlled subsidiary, Yantai Manur High-Temperature Alloy Co., Ltd. (hereinafter referred to as "Manur High-Temperature Alloy"), with an estimated annual amount not exceeding RMB 0.5 billion. (7) The Company and/or Yantai Taihai Nuclear Power provide a guarantee for its third-level controlled subsidiary, Yantai Ruifa High-Temperature Alloy Co., Ltd. (hereinafter referred to as "Yantai Ruifa"), based on its shareholding ratio, with an estimated annual amount not exceeding RMB 4 billion. (8) Yantai Taihai Nuclear Power provide a guarantee for the Company, with an estimated annual amount not exceeding RMB 3 billion. When handling specific guarantee matters, the Company will still need to sign corresponding contracts with the guaranteed parties and financial institutions. The final guarantee amount shall be subject to the actually signed contracts. The Company's Board of Directors hereby requests the Shareholders' Meeting to authorize the Company's Chairman and Financial Officer to handle all matters related to the aforementioned guarantee business, including but not limited to the preparation and submission of guarantee materials, joint signing of guarantee contracts, and other related matters. The authorization period is valid from the date of approval by the Company's 2025 Annual Shareholders' Meeting until the date of approval by the 2026 Annual Shareholders' Meeting. II. Basic Information of Guaranteed Parties
- Yantai Taihai Manur Nuclear Power Equipment Co., Ltd. Legal Representative: Chen Wei Date of Establishment: December 25, 2006 Registered Capital: RMB 66,100 million Address: No. 6, Hengyuan Road, Lai'an Economic Development Zone, Yantai City, Shandong Province Business Scope: Licensed items: Manufacturing of civil nuclear safety equipment; Non-destructive testing of civil nuclear safety equipment; Manufacturing of special equipment; Road transportation of goods (excluding dangerous goods). (Business activities that require approval shall be carried out only after approval by the relevant authorities, and the specific business activities shall be subject to the approval documents or permits from the relevant authorities.) General items: Research and development of new material technologies; Manufacturing of metal materials; Sales of metal materials; Researc