Statement
Guotai Junan Securities Co., Ltd. (hereinafter referred to as "Guotai Junan," "the Sponsor," or "this Sponsor") and its sponsoring representatives Ye Jingxuan and Zhang Chenyu, in accordance with the Company Law of the People's Republic of China (hereinafter referred to as "the Company Law"), the Securities Law of the People's Republic of China (hereinafter referred to as "the Securities Law"), the Administrative Measures for the Registration of Securities Issuance by Listed Companies (hereinafter referred to as "the Registration Measures"), the Administrative Measures for Securities Issuance and Listing Sponsorship (hereinafter referred to as "the Sponsorship Measures"), and other relevant laws, regulations, and provisions of the China Securities Regulatory Commission (hereinafter referred to as "CSRC") and the Shenzhen Stock Exchange (hereinafter referred to as "SZSE"), hereby issue this sponsorship letter with honesty, diligence, and responsibility, ensuring that the letter is true, accurate, and complete. Unless otherwise specified, the abbreviations used in this sponsorship letter are consistent with those in the "Prospectus for the A-Share Issuance to Specific Objects by TongFu Microelectronics Co., Ltd. in 2026."