THE POSTPONED RE-ELECTION OF MEMBERS OF THE BOARD OFDIRECTORS AND THE SUPERVISORY COMMITTEE

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.Datang Environment Industry Group Co. Ltd.* (A joint stock company incorporated in the People’s Republic of China with limited liability) (Stock Code: 1272) THE POSTPONED RE-ELECTION OF MEMBERS OF THE BOARD OF DIRECTORS AND THE SUPERVISORY COMMITTEE The terms of the third session of the board of directors (the “Board”) and the supervisory committee (the “Supervisory Committee”) of Datang Environment Industry Group Co. Ltd.* (the “Company”) will expire in June 2024. As the nomination of candidates for directors and supervisors of the new session of the Board and the Supervisory Committee has not been finished the re-election and appointment of the members of the Board and the Supervisory Committee will be postponed.Meanwhile the terms of the specialised committees of the third session of the Board will be correspondingly extended. The Company will complete the re-election and appointment of members of the Board and the Supervisory Committee as soon as practicable and will fulfill relevant information disclosure obligations in due course.Prior to the completion of the re-election and appointment all the members of the third session of the Board and the Supervisory Committee will continue to perform their obligations and responsibilities in accordance with the laws administrative regulations and the articles of association of the Company. The postponed re-election and appointment of the members of the Board and the Supervisory Committee will not affect the normal operation of the Company.By order of the Board Datang Environment Industry Group Co. Ltd.* Zhu Liming Chairman Beijing PRC 13 June 2024 * For identification purposes only - 1 -As at the date of this announcement the executive Director is Mr. Zhu Liming; the non-executive Directors are Mr. Wang Junqi Mr. Shen Zhen Mr. Wu Daqing Mr. Chen Kan and Mr. Song Yunpeng; and the independent non-executive Directors are Mr. Ye Xiang Mr. Mao Zhuanjian and Mr. Gao Jiaxiang.This announcement is available on the websites of The Stock Exchange of Hong Kong Limited (www.hkexnews.hk) and the Company (www.dteg.com.cn).