Project Authorization – Tianjin Ruike Te Mechanical and Electrical Engineering Co., Ltd.

Manufacturer’s Authorization Letter

Project Name: Xiamen China Green Development New Era Plaza Block B Cooling tower supply

Date: 2025 year 0 9 month 28 day

To:   China Construction Eighth Engineering Bureau 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   Northeast Fourth Street, Dalian Economic and Technological Development Zone Number 8 , hereby designate and appoint pursuant to   China The law was formally enacted, with its principal place of business located at   Yinwan Plaza, at the intersection of Xinghua Road and Xinghua Fourth Branch Road, Xiqing Development Zone -304   of the   Tianjin Ruike Te Mechanical and Electrical Engineering Co., Ltd. To carry out the following valid activities as our true and lawful agent. :

On our behalf in the People’s Republic of China Participate The   CGDG-2025-JZ14-ZB bag 1008 Number   Xiamen China Green Development New Era Plaza Block B The tender documents require the provision of items manufactured by our company.   Cooling tower The relevant matters shall be binding upon us.

We hereby grant Tianjin Ruike Te Mechanical and Electrical Engineering Co., Ltd. (Name of the Agent Company) is hereby authorized to handle and perform all matters necessary for us to fulfill the aforementioned points, with full power to substitute or revoke such authority. We hereby acknowledge and confirm. Tianjin Ruike Te Mechanical and Electrical Engineering Co., Ltd. (Designated Agency Name) or its duly authorized representative shall, in accordance with this agreement, lawfully handle all matters.

I Company Guarantee   Tianjin Ruike Te Mechanical and Electrical Engineering Co., Ltd. Authorized to participate in this sub-package of the project on behalf of our company. /The sole authorized distributor of the same model of equipment as the package’s response ， and shall assume all product liabilities incumbent upon the original manufacturer, including those related to the design, manufacture, assembly, and factory testing of the bid‑related products.

Our company hereby guarantees that, with respect to this bidding process and the performance of the contract following award, … Tianjin Ruike Te Mechanical and Electrical Engineering 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.

Our side on 2025 year 09 month 28 This document is signed today as evidence thereof.

Original manufacturer issuing the authorization letter: (Seal of the organization)