Project Authorization – Sanke Intelligent (Shandong) Group Co., Ltd.

To: Xinjiang Huamei Shengdi Tourism Co., Ltd.

Our company Dalian Sinfine Environmental Equipment Co., Ltd. is based on China A manufacturer established under the law, with its principal place of business located at No. 8, Northeast Fourth Street, Dalian Economic and Technological Development Zone , hereby designate and appoint pursuant to China The law was formally enacted, with its principal place of business located at Room 4-604, Donghuan International Plaza, No. 3966, East Second Ring Road, Licheng District, Jinan City, Shandong Province (Business Address: Second row, Room 5, within the courtyard of the Shantou Village Committee, at the southeast corner of the intersection of Tonghua Road and Helian Road, Licheng District) of the Sanke Intelligent (Shandong) Group Co., Ltd. Acting as our true and lawful agent, to engage in the following valid activities:

Acting on our behalf in the People’s Republic of China to handle the …th item. CGDG-2025-JZ16-FZ Package 2007 Number Procurement of Cooling Towers for the Marriott Hotel Complex Project at Sayram Lake, Xinjiang Huamei Shengdi The project procurement documents require the provision of items manufactured by us. Cooling tower The relevant matters shall be binding upon us.

We hereby grant Sanke Intelligent (Shandong) Group Co., Ltd. To handle and perform all matters necessary for us to accomplish the foregoing points, with full authority to substitute or revoke as deemed appropriate. Hereby acknowledged and confirmed. Sanke Intelligent (Shandong) Group Co., Ltd. or its duly authorized representative shall lawfully handle all matters hereunder.

Our company guarantees Sanke Intelligent (Shandong) Group Co., Ltd. We are the sole authorized agent of your company for the same model of equipment participating in this project’s sub‑package/package tender, and we shall assume all product liabilities—covering design, manufacturing, assembly, factory testing, and other responsibilities that would otherwise fall to the original manufacturer.

Our company hereby guarantees that, with respect to this bidding process and the performance of the contract following award, … Sanke Intelligent (Shandong) Group Co., Ltd. Assume joint and several liability.

This authorization is a special authorization, non‑transferable, and effective from the date of issuance. 3 months. If an extension is required at the time of signing, a separate document will be issued then.

We hereby sign this document on November 23, 2025, as evidence thereof.