Announcement of Winning Numbers for Issuance of Convertible Bonds to Unspecified Objects

Securities Code: 300881 Securities Abbreviation: Shengde Xintai Announcement Number: 2026-035 Shengde Xintai New Materials Co., Ltd. Announcement of Winning Numbers for Issuance of Convertible Bonds to Unspecified Objects Sponsor (Lead Underwriter): Orient Securities Co., Ltd. The Company and all members of the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and that there are no false records, misleading statements, or material omissions. Special Notice Shengde Xintai New Materials Co., Ltd. (hereinafter referred to as "Shengde Xintai" or the "Issuer") and Orient Securities Co., Ltd. (hereinafter referred to as "Orient Securities" or the "Sponsor (Lead Underwriter)") have organized the issuance of convertible corporate bonds to unspecified objects (hereinafter referred to as "Convertible Bonds", "Convertible Bonds", or "Shengde Bonds") in accordance with the "Securities Law of the People's Republic of China", the "Administrative Measures for Securities Issuance and Underwriting" (CSRC Order No. 228), the "Administrative Measures for Registration of Securities Issuance by Listed Companies" (CSRC Order No. 227), the "Implementation Rules for Securities Issuance and Underwriting Business of Shenzhen Stock Exchange (2025 Revision)" (SZSE [2025] No. 268), the "Shenzhen Stock Exchange Listed Company Self-Regulatory Supervision Guide No. 15 - Convertible Corporate Bonds (2025 Revision)" (SZSE [2025] No. 223), and the "Shenzhen Stock Exchange GEM Listed Company Self-Regulatory Supervision Guide No. 1 - Business Handling (2026 Revision)" (SZSE [2026] No. 135), and other relevant regulations. The Convertible Bonds issued this time will be preferentially allocated to the original shareholders registered with the Shenzhen Branch of China Securities Depository and Clearing Corporation Limited (hereinafter referred to as "ChinaClear Shenzhen Branch") as of the closing of the stock registration day. After the preferential allocation to original shareholders, the remaining portion (including the portion abandoned by original shareholders) will be offered to public investors online through the Shenzhen Stock Exchange (hereinafter referred to as "SZSE") trading system (hereinafter referred to as "Online Offering"). Investors are requested to carefully read this announcement and the SZSE website (www.szse.cn).