Announcement of Resolutions of the 38th Meeting of the Fourth Board of Supervisors of Hanjian Heshan

Stock Code: 603616 Stock Short Name: Hanjian Heshan Announcement No.: 2025-054 Beijing Hanjian Heshan Pipe Industry Co., Ltd. Announcement on Resolutions Passed at the 38th Meeting of the Fourth Session of the Supervisory Committee The Supervisory Committee and all supervisors of the Company warrant that there are no false representations or misleading statements contained in, or material omissions from this announcement. And assume legal responsibility for the authenticity, accuracy and completeness of its contents. I. Convening of the Meeting of the Supervisory Committee The notice and materials of the 38th meeting of the fourth session of the Supervisory Committee of Beijing Hanjian Heshan Pipe Industry Co., Ltd. (Hereinafter referred to as the "Company") were delivered to all supervisors on October 19, 2025, and the meeting was held and voted on site on October 24, 2025. There were 3 supervisors who should attend the meeting and 3 supervisors actually voted at the meeting. The meeting was chaired by Yang Wei, Chairman of the Supervisory Committee. The convening procedures of the meeting and the number of supervisors attending the meeting were in compliance with the requirements of the Company Law of the People's Republic of China and other laws and regulations as well as the Articles of Association of Beijing Hanjian Heshan Pipe Industry Co., Ltd. Deliberations of the Meeting of the Board of Supervisors With the unanimous consent of the supervisors present at the meeting, the following resolutions were made at the meeting: 1. The Rules of Procedure for the Cancellation and Abolition of the Board of Supervisors were considered and approved. In accordance with the relevant provisions of the Company Law, the Securities Law, the Guidelines for the Articles of Association of Listed Companies and other laws, regulations and normative documents, in order to further streamline the supervisory mechanism and improve the efficiency of decision-making and operation, the Supervisory Committee of the Company agreed to abolish the Supervisory Committee and the Audit Committee of the Board of Directors shall exercise the functions and powers of the Supervisory Committee. The relevant systems of the Board of Supervisors such as the Rules of Procedure of the Board of Supervisors of the Company shall be abolished accordingly, and the provisions concerning the Board of Supervisors and supervisors in various systems of the Company shall no longer apply. Based on the above adjustment of supervisory functions, the Supervisory Committee of the Company agreed to remove Yang Wei from the position of chairman of the Supervisory Committee; and remove Yang Wensheng and Gao Lingxia from the positions of supervisors. Agree to submit this proposal to the general meeting of the Company for consideration. This proposal shall be submitted to the general meeting of the Company for consideration. Voting results: For: 3; Abstain: 0; Against: 0. 2. Consideration and approval of the "Resolution on Closing of Investment Projects and Permanent Replenishment of Working Capital with the Remaining Proceeds" The Supervisory Committee is of the view that closing of investment projects and permanent replenishment of working capital with the remaining proceeds are conducive to improving the efficiency of the use of proceeds, further enhancing the core competitiveness of the Company and supporting the development of the Company's principal business. There is no disguised change in the use of raised funds and damage to the interests of the company and all shareholders, which complies with the provisions of laws and regulations such as the Rules for the Supervision of Raised Funds of Listed Companies and the Guidelines for Self-Discipline Supervision of Listed Companies of Shanghai Stock Exchange No.1-Standardized Operation. It is agreed that the company will close the project and use the balance of the raised funds for permanent replenishment of working capital. Agree to submit this proposal to the general meeting of the Company for consideration. This proposal shall be submitted to the general meeting of the Company for consideration. Voting results: For: 3; Abstain: 0; Against: 0. Hereby announce. Board of Supervisors of Beijing Hanjian Heshan Pipe Industry Co., Ltd. October 25