Shandong Tongda Haidao New Materials Co., Ltd. Shareholders:
In accordance with the "Audit Guidelines for Enterprise Internal Control" and the relevant requirements of the Chinese Certified Public Accountants' Auditing Standards, we have audited the effectiveness of the financial reporting internal control of Shandong Tongda Haidao New Materials Co., Ltd. (hereinafter referred to as Tongda Co., Ltd.) as of December 31, 2025.
I. Responsibility of Tongda Co., Ltd. for Internal Control