ANNOUNCEMENTPROPOSED RE-ELECTION OF DIRECTORS AND SUPERVISORS

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) ANNOUNCEMENT PROPOSED RE-ELECTION OF DIRECTORS AND SUPERVISORS The term of office of members of the third session of the board (the “Board”) of directors (the “Directors”) and the supervisory committee (the “Supervisory Committee”) of Datang Environment Industry Group Co. Ltd.* (the “Company” and its subsidiaries collectively the “Group”) has expired on the conclusion of the 2023 annual general meeting of the Company held on 28 June 2024.According to the relevant provisions in the articles of association of the Company (the “Articles ofAssociation”) all members of the third session of the Board and the third session of the Supervisory Committee will continue to perform their duties as the Directors and supervisors of the Company (the “Supervisors”) before the completion of change of session of the Board and the Supervisory Committee.The Board hereby announces that the following persons (the “Nominees”) had been nominated as members of the fourth session of the Board or the Supervisory Committee. Ordinary resolution approving their election will be submitted to the shareholders of the Company (the “Shareholders”) at the extraordinary general meeting of the Company (“EGM”) for consideration and approval.Candidates for the proposed election of Directors: (1) Mr. Zhu Liming as executive Director; (2) Mr. Xu Chun Mr. Pang Xiaojin Mr. Xia Huaixiang and Mr. Chu Hongbo as non-executive Directors; and (3) Mr. Mao Zhuanjian Mr. Suen Chun Hung Benjamin and Ms. Hu Yunqing as independent non- executive Directors.The above candidates are proposed to be elected as non-employee representative Directors of the fourth session of the Board.- 1 -Candidates for the proposed election of Supervisors: (1) Mr. Liu Liming and Mr. Zhang Xuefeng as non-employee representative Supervisors. The existing non-employee representative Directors namely Mr. Wang Junqi Mr. Wu Daqing Mr.Chen Kan Mr. Ye Xiang and Mr. Gao Jiaxiang will retire and will not stand for election as the Directors of the fourth session of the Board. The above retiring Directors have confirmed that they have no disagreement with the Board and there are no matters that need to be brought to the attention of the Shareholders. The election of the employee representative Director of the fourth session of the Board will be considered in an employee representative meeting of the Company to be convened in due course.As disclosed in the announcement of the Company dated 18 October 2023 Mr. Shen Zhen resigned as a Director in September 2023. His resignation will become effective on the date of the EGM to approve the appointment of a succeeding Director. As disclosed in the announcement of the Company dated 26 January 2024 Mr. Huang Yuan resigned as a Supervisor and the chairman of the Supervisory Committee in January 2024. His resignation will become effective upon the appointment of a new Supervisor to be elected at the EGM.INFORMATION ABOUT NOMINEES OF DIRECTORS Executive Director Mr. Zhu Liming aged 52 holds a doctorate degree in engineering and is a member of the Communist Party of China and a principal senior engineer. He currently serves as the chairman executive Director secretary of the Party Committee and the authorized representative of the Company acting as the general manager. He has successively served as a technician of power maintenance team a technician and the deputy director of the electric workshop of thermal power plant of Anqing Petrochemical Complex (安庆石油化工总厂) the head of the production planning and operation department of Henan Languang Environmental Power Generation Co. Ltd. (河南蓝光 环保发电有限公司) the head of the human resource department of Wuhan Kaidi Power Engineering Co. Ltd. (武汉凯迪电力工程有限公司) the general manager of Henan Languang Environmental Power Generation Co. Ltd. the deputy general manager and the marketing director of Wuhan Kaidi Electric Power Company Limited (武汉凯迪电力股份有限公司) the deputy general manager of Datang Xinjiang Energy Development Co. Ltd. (大唐新疆能源开发有限公司) the deputy general manager a member of the Party Leadership Group the secretary of the Party Leadership Group the general manager and the deputy secretary of the Party Committee of Datang Xinjiang Power Generation Co. Ltd. (大唐新疆发电有限公司) the general manager and the deputy secretary of the Party Committee of Guangdong Branch of China Datang the director of Guangdong Planning and Development Center of China Datang Group (中国大唐集团广东规划发展中心) the general manager and the deputy secretary of the Party Committee of Guangdong Branch of Datang International Power Generation Co. Ltd. (大唐国际发电股份有限公司) the chairman and the secretary of the Party Committee of Datang Sichuan Power Generation Company Limited (大唐四川 - 2 -发电有限公司) the director of Sichuan Tibet Planning Exhibition Center of China Datang Group (中 国大唐集团川藏规划专展中心) and the chairman of Sichuan Branch of Datang International Power Generation Co. Ltd.Non-executive Directors Mr. Xu Chun aged 52 holds a bachelor’s degree and is a member of the Communist Party of China and a senior engineer. He currently serves as the deputy director of the production and environmental protection department of China Datang Corporation Ltd. (中国大唐集团有限公司). He has successively served as a technician in the boiler body section of the boiler workshop of the maintenance branch and specialized engineer of the maintenance branch of Heilongjiang Fularji Power Plant (黑龙江富拉尔基发电总厂) an inspector of the equipment department of Inner Mongolia Datang International Tuoketuo Power Generation Company Limited (内蒙古大唐国际托克 托发电公司) the director engineer of the preparation office for the comprehensive project of Inner Mongolia Datang International the director engineer of Inner Mongolia Datang International Zhuozi Wind Power Co. Ltd. (内蒙古大唐国际卓资风电有限公司) the deputy director of the preparation office for the Hongmu Naobao Wind Power Project in Chahar Right Back Banner of Inner Mongolia Datang International the chief engineer and secretary of the discipline inspection commission of Inner Mongolia Datang International Wind Power Development Co. Ltd. (内蒙古大唐国际风电开发 有限公司) the chief engineer of Inner Mongolia Datang International Renewable Power Company Limited (内蒙古大唐国际新能源有限公司) the deputy general manager of Inner Mongolia Datang International Renewable Power Company Limited an executive director and the general manager of Inner Mongolia Datang International Renewable Power Company Limited the director of the production and operation department of Inner Mongolia Branch of China Datang Corporation Ltd. (Datang International) the general manager and deputy secretary of the Party Committee of Chifeng Business Division of Inner Mongolia Branch of China Datang Corporation Ltd. and the deputy general manager and a member of the Party Committee of Inner Mongolia Branch of China Datang Corporation Ltd. (Datang International).Mr. Pang Xiaojin aged 53 holds a doctorate degree in engineering and is a member of the Communist Party of China and a senior engineer. He currently serves as the deputy director of the operation and management department of China Datang Corporation Ltd.. He has successively served as the head of the environmental planning division of Tokyo Uichi Co. Ltd. (日本东京粹一株式会 社) the deputy chief engineer and the head of the technology development department and the head of the e-commerce department of Richu Industrial Group Company (日出产业集团公司) the deputy chief engineer and the head of the e-commerce department and the head of the technology development department of China Richu Industrial Group Company (中国日出产业集团公司) a first-level employee of the market trading office of the marketing department of China Datang Corporation (中国大唐集团公司) the deputy director of the market trading office of the marketing department of China Datang Corporation the deputy director of the marketing office of the planning and marketing department of China Datang Corporation the director of the commercial logistics office of the materials management department of China Datang Corporation the director of the commercial logistics office of the materials management department (tendering and bidding center) of China Datang Corporation the director of the supply management office of the materials management - 3 -department (tendering and bidding center) of China Datang Corporation the deputy general manager and a member of the Party Committee of Shanxi Branch of China Datang Corporation the deputy general manager and a member of the Party Committee of Datang Shanxi Power Generation Co. Ltd.(大唐山西发电有限公司) the deputy director of the sales department (marketing center) of China Datang Corporation Ltd. and the deputy director of the marketing department of China Datang Corporation Ltd.Mr. Xia Huaixiang aged 58 holds a bachelor’s degree in engineering and is a member of the Communist Party of China and a principal senior engineer. He has successively served as a technician of the mechanical department of Southwest Power Design Institute Co. Ltd. (西南电力设计研究院) a technician of the computing technology department of Southwest Power Design Institute Co. Ltd.an engineer of the Desulfurization Technology Research Center of Southwest Power Design Institute Co. Ltd. (西南电力设计研究院脱硫技术研究室) the deputy director and chief engineer of the desulfurization technology department of Southwest Power Design Institute Co. Ltd. the deputy chief engineer of Guohua Ebara Environmental Engineering Co. Ltd. (国华荏原环境工程有限公司) the chief engineer of Guohua Ebara Environmental Engineering Co. Ltd. the general manager assistant of Datang Environmental Technology Engineering Co. Ltd. (大唐环境科技工程有限公司) the chief engineer of China Datang Technologies & Engineering Co. Ltd. (中国大唐集团科技工程有 限公司) the chief engineer of Datang Technology Industry Group Co. Ltd. (大唐科技产业集团有限 公司) the chief engineer of the Company the vice president a member of the Party Committee and the chairman of the trade union of China Datang Corporation Science and Technology Research Institute Co. Ltd. (中国大唐集团科学技术研究院有限公司) the vice president and a member of the Party Committee of China Datang Corporation Renewable Power Science and Technology Research Institute Co. Ltd. (中国大唐集团新能源科学技术研究院有限公司) the deputy general manager a member of the Party Committee and the chairman of the trade union of China Datang Corporation Technology and Economics Research Institute Co. Ltd. (中国大唐集团技术经济研究院有限责任公 司) the deputy general manager a member of the Party Committee the chairman of the trade union and the director of Power Engineering Construction Supervision Center of China Datang Corporation Technology and Economics Research Institute Co. Ltd.Mr. Chu Hongbo aged 46 holds a bachelor’s degree and is a member of the Communist Party of China and a senior engineer. He has successively served as a technician of the mechanical operation team of the First Coal Mine of Dayan Mining Bureau the technical supervisor of the mechanical and electrical department of the First Coal Mine of Dayan Coal Industry Co. Ltd. (大雁煤业有限责任公 司) the vice-captain of the mechanical operation team of the First Coal Mine of Dayan Coal Industry Co. Ltd. the captain of the mechanical operation team of the First Coal Mine of Dayan Coal Industry Co. Ltd. the deputy secretary of the Party General Branch and the captain of the mechanical operation team of the First Coal Mine of Dayan Coal Industry Co. Ltd. the deputy chief electrical and mechanical engineer of Datang Hulunbeier Energy Development Co. Ltd. (大唐呼伦贝尔能源开 发有限公司) the deputy general manager and manager of Shunxing Mine of Datang Hulunbeier Energy Development Co. Ltd. the secretary of the Party Committee general manager and manager of Shunxing Coal Mine of Datang Hulunbeier Energy Development Co. Ltd. the deputy chief engineer of China Datang Coal Industry Co. Ltd. (中国大唐集团煤业有限责任公司) the deputy chief engineer of China Datang Corporation Energy Investment Co. Ltd. (中国大唐集团能源投资有 - 4 -限责任公司) deputy general manager of Inner Mongolia Branch a member of the Party Committee of China Datang Corporation Energy Investment Co. Ltd. and the deputy general manager a member of the Party Committee and the chairman of the trade union of China Datang Corporation Energy Investment Co. Ltd.Independent Non-executive Directors Mr. Mao Zhuanjian aged 71 he currently serves as an independent non-executive Director of the Company. He holds a bachelor’s degree and is a member of the Communist Party of China a professor-level senior engineer a core expert of China Electricity Council (中国电力企业联合会 “CEC”) an expert of environmental protection and energy conservation professionals for the power industry (电力行业环保节能专家库专家) and a senior expert of the expert database related to energy conservation and environmental protection of the Ministry of Industry and Information Technology (MIIT). He successively served as the engineer and director member of the environmental protection office of the planning department of the Ministry of Water and Power Industry (国家水电部) the deputy head and senior engineer of the environmental protection and management division under the Environmental Protection Center for CEC deputy director of the general office and director of the technical consulting office of the Ministry of Electric Power State Grid Corporation of China and the CEC Electrical Construction Technical and Economic Consulting Centre Beijing Registered Consulting Engineer the director of environmental protection division and the director of climate change response division of the industry development and the environment and resources department under the CEC the vice secretary for the National Collaborative Network for Desulfurization and Denitrification Technologies for the Power Industry (全国电力行业脱硫脱硝技 术协作网) the deputy secretary general for the energy conservation and environmental protection sub-division under the CEC a member of the electric power environmental protection committee of the Chinese Society for Electrical Engineering and a member of the low-carbon economy working committee of the China Association of Plant Engineering Consultants.Mr. Suen Chun Hung Benjamin aged 39 holds a bachelor’s degree of economics and the master’s degree of business administration. He served as the deputy general manager of the investment banking merger and acquisition department of Deutsche Bank Hong Kong Branch. He currently serves as the co-president of Macau Chung Kiu Investment Group (澳门中桥投资集团) the president of Macau System Agriculture Co. Ltd. (澳门系统农业有限公司) and concurrently serves as a standing member of the 13th Chinese People's Political Consultative Conference (CPPCC) of Heilongjiang Province (黑龙江省第十三届政协) the secretary-general of Macau Chinese People’s Political Consultative Conference (Provincial) Members Association (澳区省级政协委员联谊会) the president of General Association of Macau Heilongjiang (澳门黑龙江总会) the president of Zhongheng Zhihui Association (中衡智汇协会) the president of Macau Modern System Agriculture Association (澳门现代系统农业协会) the vice president of Macau Innovation Investment United Association (澳门创新投资联合会) a member of Macao Chamber of Commerce (澳门中华总商会) the vice president of Macao Chao Shan Youth Association (澳门潮汕青年协会) and the vice president of Macau-Korea Interaction Association (澳门韩国互动交流协会). The Listing Committee of The Stock Exchange of Hong Kong Limited (the “Stock Exchange”) censured Mr. Suen who was then a former independent non-executive director of Kiu Hung International Holdings Limited (stock - 5 -code: 381) on 12 June 2019. For details please refer to the regulatory announcement published by the Stock Exchange on the same day. Mr. Suen has completed the training provided by the Hong Kong Institute of Directors according to the direction of the Stock Exchange and has provided the Stock Exchange with the written certification of his full compliance of such training regulation issued by the training institution. Accordingly the nomination committee of the Company and the Board consider that Mr. Suen is qualified to serve as a Director of the Company.Ms. Hu Yunqing aged 55 holds a bachelor’s degree of engineering and a master’s degree of accounting and is a Chinese certified public accountant a Chinese certified asset valuer and a practicing member of Beijing Institute of Certified Public Accountants. She successively served as a staff of the general office of Beijing Department Store Company of Beijing No.1 Commercial Bureau (北京市第一商业局北京市百货公司工作综合办公室) the deputy general manager of Beijing Saitiangong Company (北京赛天工公司) the project manager of Zhonglunxin Accounting Firm (中伦信会计师事务所) the senior manager of ShineWing Certified Public Accountants (Special General Partnership). She currently serves as the founding partner and executive partner of BeijingWisecorol Certified Public Accountants Ltd. (General Partnership) (北京智富会计师事务所（普通合伙）).INFORMATION ABOUT NOMINEES OF SUPERVISORS Mr. Liu Liming aged 52 holds a bachelor’s degree in economics and is a member of the Communist Party of China and a principal senior economist. He currently serves as the deputy director of the audit department of China Datang Corporation Ltd.. He has successively served as a staff first-class staff second-class staff and the deputy director of the first audit division of the audit department of China Datang Corporation the deputy director and the director of the third audit division of the audit department of China Datang Corporation the deputy director of the audit department and director of the third audit division of the audit department of China Datang Corporation the deputy director of the audit department of China Datang Corporation Ltd. the deputy director of the audit department and director of the third audit division of the audit department of Datang International Power Generation Co. Ltd. and China Datang Corporation Renewable Power Co. Ltd. (中国大唐集团新能源股份有限公司) the deputy general manager chief accountant and a member of the Party Committee of China Datang Corporation Technology and Economic Research Institute Co. Ltd. and the associate dean and chief accountant of the Cadre Training Institute of China Datang Corporation (中国大唐集团干部培训学院) the deputy director of the legal affairs department (risk management) of China Datang Corporation Ltd. the director of Guangzhou Audit Center of China Datang Corporation and the director of Guangzhou Legal Center of China Datang Corporation.Mr. Zhang Xuefeng aged 55 holds a bachelor’s degree and is a member of the Communist Party of China and a principal senior accountant. He currently serves as a Supervisor of the Company. He successively served as an intern in the education division and other divisions of Chifeng Thermal Power Plant (赤峰热电厂) an accountant in the finance division a cashier of the finance division general ledger statements cost accountant and chief accountant of Hongshan Power Plant (红山电厂) the deputy director of the finance division of related parent company of Chifeng Thermal Power - 6 -Plant director of the finance division of Donglong Industrial Co. Ltd. (东龙实业有限公司) the manager of the finance division of Auxiliary Industry Company (辅业公司) the director of the finance division of Datang Chifeng Saihanba Wind Power Co. Ltd. (大唐赤峰塞罕坝风力发电有限 责任公司) the deputy chief accountant and director of the finance division of Datang Chifeng Saihanba Wind Power Co. Ltd. the chief accountant chief accountant and director of the finance and property management department deputy chief accountant and director of the finance and property management department of China Datang Corporation Renewable Power Co. Ltd. (中国大唐集团新 能源有限责任公司) the chief accountant a member of the Party Leadership Group the chief accountant and a member of the Party Committee of Datang Guizhou Power Generation Co. Ltd. (大 唐贵州发电有限公司) and the chief accountant and a member of the Party Committee of China Datang Corporation Energy Investment Co. Ltd.. He concurrently serves as a supervisor of Zhongxin Energy and Chemical Technology Company Limited (中新能化科技有限公司).GENERAL INFORMATION Save as disclosed above as at the date of this announcement each of the Nominee (i) did not have any other relationship with any other director supervisor senior management or substantial or controlling shareholders of the Company (within the definition of the Rules (the “Listing Rules”) Governing the Listing of Securities on the Stock Exchange); (ii) did not have any interest in the securities of the Company within the meaning of Part XV of the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong); (iii) did not hold any other position with any member of the Group; (iv) had not held any directorship in any other companies listed in Hong Kong or overseas in the last three years; (v) had no other major appointment or professional qualification; and (vi) had no information that is required to be disclosed pursuant to Rules 13.51(2) of the Listing Rules nor any other matter that needs to be brought to the attention of the Shareholders.Each of the candidates for independent non-executive Directors has confirmed that (i) he/she meets the independence criteria for directors as set out in Rule 3.13 of the Listing Rules as regards each of the factors referred to in Rule 3.13 (1) to (8) of the Listing Rules (ii) he/she does not have any past or present financial or other interest in the business of the Group or any connection with any core connected person (as defined in the Listing Rules) of the Company and (iii) there are no other factors that may affect his/her independence at the time of his/her appointment. There are also no other matters required to be disclosed under Rule 3.14 of the Listing Rules. The nomination committee under the Board has assessed and reviewed the independence of each of the candidates for independent non-executive Directors and is of the view that each of the candidates for independent non-executive Directors has satisfied the independence requirement.The nomination committee under the Board considers that each of the candidates for independent non-executive Directors possesses basic knowledge of the operation of listed companies is familiar with relevant laws administrative regulations rules and other normative documents has economic financial and management or other working experience that is necessary for performing the duties of an independent non-executive director and will properly perform his duties and responsibilities as an independent non-executive Director and make positive contributions to the development of the - 7 -Company. Each of the candidates for independent non-executive Directors will also promote diversity on the Board in various aspects including age gender cultural and educational background professional experience skills and knowledge.The nominations of the independent non-executive Directors were made in accordance with the provisions of the Articles of Association taking into account the biographical details background of skills knowledge experience independence of the candidates and the specific needs of the Company and were preliminarily reviewed by the nomination committee under the Board and approved by the Board before being submitted to the EGM for election.The Nominees will be elected subject to approval by Shareholders at the EGM and their terms will be effective from the date of such approval at the EGM. It is expected that each of the Nominees will enter into a service contract with the Company (with effect from the date of the relevant resolution for a term of three years).After obtaining the relevant approval from the Shareholders at the EGM the remuneration packages of the Directors and Supervisors will be determined by the remuneration and evaluation committee of the Board and according to the remuneration plan for Directors and Supervisors approved at the 2023 annual general meeting of the Company held on 28 June 2024.The nomination committee of the Board and the Board are of the view that the Nominees for the fourth session of the Board possess diverse expertise in terms of energy finance accounting and management. They possess professional experience and knowledge which are strongly complementary to each other and such knowledge and experience are conducive to the scientific decision-making of the Board. At the same time there are also diverse characteristics among the Nominees for the Board in terms of age and years of service which can enhance the performance of the Company. Following the appointment of Ms. Hu Yunqing taking effect upon the conclusion of the EGM the Board will achieve gender diversity and thus fulfils the requirement under Rule 13.92 of the Listing Rules.Except for those stated in this announcement the Company considers that there is no other information relating to the Nominees to be disclosed pursuant to Rule 13.51(2)(h) to (v) of the Listing Rules nor any matter which needs to be brought to the attention of the Shareholders.THE EGM A circular containing amongst other things biographical details of the candidates for Directors and Supervisors together with the notice of the EGM will be despatched to the Shareholders in due course and published on the websites of the Stock Exchange and the Company.- 8 -In this announcement the English name of the PRC entity is a translation of its Chinese name and is included herein for identification purpose only. In the event of any inconsistency the Chinese name shall prevail.By order of the Board Datang Environment Industry Group Co. Ltd.* Zhu Liming Chairman Beijing the PRC 28 June 2024 As of 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.* For identification purposes only