Announcement on the Election of the Board of Directors

Stock Code: 301217 Stock Abbreviation: Tongguan Copper Foil Announcement Number: 2026-031 Anhui Tongguan Copper Foil Group Co., Ltd. Announcement on the Election of the Board of Directors 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 major omissions. The term of office for the second board of directors of Anhui Tongguan Copper Foil Group Co., Ltd. (hereinafter referred to as the "Company") will expire on June 29, 2026. In accordance with the Company Law, the Listing Rules of the Shenzhen Stock Exchange ChiNext Market, the Shenzhen Stock Exchange Listed Company Self-Regulatory Management Guide No. 2 - Standardized Operation of ChiNext Listed Companies, and other laws, regulations, normative documents, and the Articles of Association, the Company has decided to proceed with the election of a new board of directors in accordance with legal procedures. The Company held the 21st meeting of the second board of directors on June 15, 2026, and deliberated and passed the "Proposal on the Election of the Board of Directors and Nomination of Candidates for Non-Independent Directors of the Third Board of Directors" and the "Proposal on the Election of the Board of Directors and Nomination of Candidates for Independent Directors of the Third Board of Directors." The third board of directors of the Company will have 9 directors, including 5 non-independent directors, 1 employee director, and 3 independent directors. After review by the Nomination Committee of the second board of directors, the board of directors agreed to nominate Mr. Gan Guoqing, Mr. Yin Dawei, Mr. Wang Tong, Mr. Chen Sixin, and Ms. Xie Xiaoxun as candidates for non-independent directors of the third board of directors (resumes are attached); and agreed to nominate Ms. Xu Shuping, Ms. Hu Liufen, and Mr. Wei Hairui as candidates for independent directors of the third board of directors (resumes are attached). After being reviewed and elected by the shareholders' meeting, they will jointly form the third board of directors of the Company with the employee representative director elected by the company's employee representative assembly. The term of office is three years, effective from the date of approval by the shareholders' meeting. The above director candidates need to be submitted to the Company's second extraordinary general meeting of shareholders in 2026 for deliberation and voting item by item using the cumulative voting system. The Nomination Committee of the Board of Directors has reviewed the qualifications of the above director candidates and believes that the candidates for directors of the third board of directors meet the director qualification requirements stipulated by relevant laws and regulations. The number of director candidates meets the requirements of the Company Law and other laws and regulations and the Articles of Association. The proportion of independent director candidates is not less than one-third of the total number of directors. The number of proposed directors who concurrently serve as general manager or other senior management personnel does not exceed one-half of the total number of directors. Ms. Xu Shuping and Ms. Hu Liufen, candidates for independent directors, have obtained independent director qualification certificates; Mr. Wei Hairui has not yet obtained an independent director qualification certificate. Mr. Wei Hairui has formally promised to participate in the next independent director training organized by the Shenzhen Stock Exchange and obtain the independent director qualification certificate recognized by the Shenzhen Stock Exchange. In accordance with relevant regulations, the qualifications and independence of independent director candidates need to be filed with the Shenzhen Stock Exchange for review. If there are no objections, they can be submitted to the shareholders' meeting for deliberation along with other non-independent director candidates. To ensure the normal operation of the board of directors, before the directors of the third board of directors take office, the members of the second board of directors will continue to perform their director duties in accordance with relevant laws, regulations, normative documents, and the Articles of Association. Hereby announced. Board of Directors of Anhui Tongguan Copper Foil Group Co., Ltd. June 15, 2026