上海赛伦生物技术股份有限公司关于变更签字注册会计师的公告

Group 1 - The company has announced a change in the signing registered accountant for the 2025 annual audit, with Chen Yuyi replacing Jin Yuan as the signing registered accountant [2] - The company has retained Tianzhi International Accounting Firm as its auditing institution for the 2025 fiscal year [1] - The change in the signing registered accountant is due to internal adjustments within Tianzhi International [2] Group 2 - Chen Yuyi, the new signing registered accountant, became a registered accountant in 2021 and has been involved in auditing listed companies since 2019 [3] - Chen Yuyi has no record of criminal penalties or administrative sanctions from regulatory bodies in the past three years [4] - The change in the signing registered accountant does not violate independence standards and Chen Yuyi does not hold or trade the company's stock [5] Group 3 - The transition process for the change in signing registered accountant has been orderly, and it will not adversely affect the company's 2025 financial report audit and internal control audit [6]