Stock Code: 200771 Stock ID: Hangqilun B Announcement No.: 2022-16 Hangzhou Steam Turbine Co., Ltd. Resolutions of the 15th Meeting of the 8th Supervisory Committee The members of the Supervisory Committee acknowledge being responsible for the truthfulness, accuracy, and completeness of the announcement. Not any false record, misleading statement or significant omission carried in this announcement. The notice for calling of the 15th session of the 8th Supervisory Committee of Hangzhou Steam Turbine Co., Ltd. was served on March 23,2022, and the meeting was held in the morning of March 29, 2022 in the meeting room No.304 of steam turbine power Building of the Company. The meeting was held by way of onsite meeting voting as well All of the 3 supervisors presented the meeting. The supervisors examined and voted on the proposals at the meeting. Ms. Li Guiwen secretary of the Board, observed the meeting. The meeting procedures are legal and complying with the Company Law and Articles of Association. The meeting was hosted by Chief Supervisory Ms. Zhang Weijie. The following proposals were examined at the meeting and passed by open ballot. I. The Work Report of the Supervisory Committee 2021 3 votes in favor, 0 objective, 0 waived; The proposal was approved. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-30).This proposal is subject to examination of the Shareholders’ Meeting 2021. II. Annual Report 2021 and Summary 3 votes in favor, 0 objective, 0 waived; The proposal was passed. Upon inspection, the Committee deems that the producing and examination procedures of the Annual Report 2021 were legal and complying with the requirements of the CSRC. The Report is reflecting the financial position and business performance of the Company in the year frankly and completely. There is no false record, misleading statement, or material omission in the report. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-18 and 2022-17).This proposal is subject to examination of the Shareholders’ Meeting 2021. III.The Financial Report 2021 3 votes in favor, 0 objective, 0 waived; The proposal was passed. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-19).This proposal is subject to examination of the Shareholders’ Meeting 2021. IV. The Dividend Plan 2021 1 3 votes in favor, 0 objective, 0 waived; The proposal was approved. The board of directors of the company proposed: In 2021, with the total share capital of 754,010,400 shares at the end of the year deducting 111,800 treasury shares repurchased as of date of record by Company, that is, 753,898,600 shares, the Company would distribute cash dividend to all the shareholders at the rate of CNY 4.0 for every 10 shares (with tax inclusive) , 3 bonus shares , and no reserve would be converted into share capital. This proposal is subject to examination of the Shareholders’ Meeting 2021. V. The Internal Control Introspection Report 2021 3 votes in favor, 0 objective, 0 waived; The proposal was passed. The Supervisory Committee deems the Internal Control Introspection Report 2020 as reflecting the practice of the Company and the effective operation of internal control system. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-21). VI.Proposal of the provision for impairment of assets of 2021 3 votes in favor, 0 objective, 0 waived; The proposal was passed. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-22). VII.Proposal on the Write-offs Asset of 2021 3 votes in favor, 0 objective, 0 waived; The proposal was passed. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-23). VIII. Proposal on the use of idle funds for short-term and medium-term financial management by the company in 2022 3 votes in favor, 0 objective, 0 waived; The proposal was passed. For details of the proposal please refer to the announcement disclosed by the company on http://www.cninfo.com.cn on March 31, 2022(Announcement No.: 2022-25). Documents for reference 1. Resolutions of the 15th meeting of the 8th board of Supervisory Committee signed by the supervisor present and bearing the seal of Supervisory Committee The Supervisory Committee of Hangzhou Steam Turbine Co., Ltd. March 31, 2022 2