Announcement on Adjustment of Company Director Positions and Resignation from Senior Management Positions

Securities Code: 300390 Securities Abbreviation: Tianhua New Energy Announcement No.: 2026-039 Suzhou Tianhua New Energy Technology Co., Ltd. Announcement on Adjustment of Company Director Positions and Resignation from Senior Management Positions The Company and the entire Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or significant omissions. The Board of Directors of Suzhou Tianhua New Energy Technology Co., Ltd. (hereinafter referred to as the "Company") recently received the written resignation report from Ms. Wang Heng, Director and Vice President, applying to resign from her senior management position. Due to the Company's strategic development and job adjustments, Ms. Wang Heng has applied to resign from her position as Vice President. Her original senior management term was scheduled to end on December 25, 2028, which is the expiration date of the Seventh Board of Directors. In accordance with the "Company Law," "Guiding Opinions on the Regulation of Listed Companies on the Shenzhen Stock Exchange No. 2 - Operation of GEM Listed Companies," and the "Articles of Association," etc., Ms. Wang Heng's resignation report for her senior management position takes effect from the date it is delivered to the Company's Board of Directors. After resigning from the position of Vice President, she will c