Announcement on Company Providing Guarantees for Bank Credit and Loans for Wholly-Owned and控股 Subsidiaries

Securities Code: 002324 Securities Abbreviation: Puliite Announcement No.: 2026-016 Shanghai Puliite Composite Material Co., Ltd. Announcement on Company Providing Guarantees for Bank Credit and Loans for Wholly-Owned and Controlled Subsidiaries The Company and all members of its Board of Directors guarantee the truthfulness, accuracy, and completeness of the announcement, and there are no false representations, misleading statements, or material omissions. Special Reminder: The guaranteed entities Zhejiang Yan Hua Supply Chain Management Co., Ltd., Guangdong Hai Sida New Energy Technology Co., Ltd., Jiangsu Hai Sida Power Co., Ltd., and Hai Sida Smart Energy (Jiangsu) Co., Ltd. have asset-liability ratios exceeding 70%. Investors are advised to pay close attention to the guarantee risks. I. Overview of Guarantee Situation Shanghai Puliite Composite Material Co., Ltd. (hereinafter referred to as the "Company") deliberated and approved the "Proposal on the Company Providing Guarantees for Bank Credit and Loans for Wholly-Owned and Controlled Subsidiaries" at the seventh meeting of the seventh Board of Directors held on April 23, 2026. To meet the capital needs for production and operation of its subsidiaries and controlled subsidiaries, the Company agreed to provide joint liability guarantees for credit and loan applications made by these subsidiaries to banks, totaling RMB 557,236.88 million (including RMB 551,550.00 million and USD 8 million; USD 8 million converted to RMB 5,686.88 million based on the central parity rate of 7.1086 on December 31, 2025). Specifically, the Company will provide a joint liability guarantee of no more than RMB 450 million for its wholly-owned subsidiary Zhejiang Puliite New Material Co., Ltd. (hereinafter referred to as "Zhejiang Puliite"); a joint liability guarantee of no more than RMB 30 million for its wholly-owned subsidiary Chongqing Puliite New Material Co., Ltd. (hereinafter referred to as "Chongqing Puliite"); a joint liability guarantee of no more than RMB 20 million for its controlled subsidiary Zhejiang Yan Hua Supply Chain Management Co., Ltd. (hereinafter referred to as "Zhejiang Yan Hua"); a joint liability guarantee of no more than USD 8 million for WPR Holdings LLC (hereinafter referred to as "US Puliite"); a joint liability guarantee of no more than RMB 800 million for its wholly-owned subsidiary Guangdong Puliite New Material Co., Ltd. (hereinafter referred to as "Guangdong Puliite"); and a joint liability guarantee of no more than RMB 76,600 million for its controlled subsidiary Jiangsu Hai Sida Power Co., Ltd. (hereinafter referred to as "Hai Sida Power"). Hai Sida Power will provide a joint liability guarantee of no more than RMB 58,000 million for its controlled subsidiary Jiangsu Hai Sida Power Technology Co., Ltd. (hereinafter referred to as "Power Technology"); a joint liability guarantee of no more than RMB 12,950 million for its controlled subsidiary Hai Sida Smart Energy (Jiangsu) Co., Ltd. (hereinafter referred to as "Smart Energy"); a joint liability guarantee of no more than RMB 79,500 million for its controlled subsidiary Jiangsu Hai Sida Energy Storage Technology Co., Ltd. (hereinafter referred to as "Energy Storage Technology"); a joint liability guarantee of no more than RMB 84,500 million for its controlled subsidiary Guangdong Hai Sida New Energy Technology Co., Ltd. (hereinafter referred to as "Guangdong Hai Sida"); and a joint liability guarantee of no more than RMB 41,000 million for its controlled subsidiary HIGHSTAR ENERGY MALAYSIA SDN. BHD. (hereinafter referred to as "Malaysia Hai Sida"). Power Technology will provide a joint liability guarantee of no more than RMB 8,000 million for Hai Sida Power; Energy Storage Technology will provide a joint liability guarantee of no more than RMB 8,000 million for Hai Sida Power; Guangdong Hai Sida will provide a joint liability guarantee of no more than RMB 8,000 million for Hai Sida Power. Guangdong Hai Sida will provide a joint liability guarantee of no more than RMB 11,000 million for Hai Sida Power; Energy Storage Technology will provide a joint liability guarantee of no more than RMB 8,000 million for Hai Sida Power; Power Technology will provide a joint liability guarantee of no more than RMB 5,000 million for Hai Sida Power. Energy Storage Technology will provide a joint liability guarantee of no more than RMB 8,000 million for Hai Sida Power; Guangdong Hai Sida will provide a joint liability guar