Internal Control Audit Report
Beijing Dehao International Certified Public Accountants (Limited Liability Partnership)
Audit Report No. Dehao Internal [2026] 00000040
To all shareholders of Sichuan Qiaoyuan Gas Co., Ltd.:
In accordance with the "Guidelines for Internal Control Audits" and relevant requirements of the Chinese Certified Public Accountant Practice Standards, we audited the effectiveness of the internal controls over the financial reporting of Sichuan Qiaoyuan Gas Co., Ltd. (hereinafter referred to as Qiaoyuan) as of December 31, 2025.