Progress Announcement on Providing Guarantee for Wholly-Owned Subsidiary

Rongfa Nuclear Power Equipment Co., Ltd. (hereinafter referred to as "the Company" or "Rongfa Nuclear Power") and Yantai Bank Co., Ltd. Laishan Branch (hereinafter referred to as "Yantai Bank") have re-signed the "Maximum Guarantee Contract" to provide a guarantee for the additional credit application by its wholly-owned subsidiary, Yantai Taihai Manur Nuclear Power Equipment Co., Ltd. (hereinafter referred to as "Yantai Taihai Nuclear Power"). The maximum guarantee amount has increased from 176 million yuan to 671 million yuan. This matter has been approved by the Company's seventh board of directors at its third meeting and the 2025 annual shareholders' meeting. For specific details, please refer to the announcements disclosed by the Company on April 25, 2026, and May 22, 2026, including the "Resolution Announcement of the Third Meeting of the Seventh Board of Directors," "Announcement on Providing Guarantee for Subsidiaries," and "Resolution Announcement of the 2025 Annual Shareholders' Meeting" (Announcement No.: 2026-008/016/025). According to the meeting resolutions, the Company provides a guarantee for Yantai Taihai Nuclear Power, with an expected annual amount not exceeding 2.5 billion yuan. This guarantee amount is within the limit, and there is no need to submit it for approval by the board of directors and shareholders' meeting.