Internal Control Audit Report
Zhongxinghua Certified Public Accountants LLP
Audit Report Number: Zhongxinghua Internal Control Audit [2026] No. 020004
To the Shareholders of Shanghai Kai Xin Separation Technology Co., Ltd.:
In accordance with the "Guidelines for Auditing of Internal Control" and the relevant requirements of the Chinese Certified Public Accountants' Practice Standards, we have audited the effectiveness of the internal financial reporting controls of Shanghai Kai Xin Separation Technology Co., Ltd. (hereinafter referred to as "Shanghai Kai Xin") as of December 31, 2025.