Datang Environment Industry : POSTPONEMENT OF ANNUAL GENERAL MEETING; EXTENSION AND CHANGE OF BOOK CLOSURE PERIODS

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Datang Environment Industry Group Co., Ltd.*

大 唐 環 境 產 業 集 團 股 份 有 限 公 司

(A joint stock company incorporated in the People's Republic of China with limited liability)

(Stock Code: 1272)

POSTPONEMENT OF ANNUAL GENERAL MEETING;

EXTENSION AND CHANGE OF BOOK CLOSURE PERIODS

Reference is made to the notice (the "Notice") of the annual general meeting (the "AGM") and the shareholder circular (the "Circular") issued by Datang Environment Industry Group Co., Ltd. (the "Company") dated 19 April 2021. Terms used in this announcement shall have the same meanings as those defined in the Notice and the Circular unless otherwise specified.

The Board announces that as a new resolution regarding proposed re-election of Directors and Supervisors will be submitted to the Shareholders for consideration at the AGM and additional time is required for the preparation of the AGM, the date of the AGM is rescheduled to be convened at 3:30 p.m. on Wednesday, 30 June 2021, instead of 3:30 p.m. on Friday, 4 June 2021 as originally scheduled.

In respect of the postponement of the AGM, the period of closure of the register of members of the Company for the purpose of determining the entitlements of the Shareholders to attend and vote at the AGM is extended from Wednesday, 5 May 2021 to Friday, 4 June 2021 (both days inclusive) to Wednesday, 5 May 2021 to Wednesday, 30 June 2021 (both days inclusive), during which period no transfer of the Shares will be effected. Shareholders whose names appear on the register of members of the Company upon the end of business hours on Wednesday, 30 June 2021 are entitled to attend and vote at the AGM. The venue of the AGM currently remains unchanged. For details, please refer to the Notice.

Furthermore, as disclosed in the Circular, the Board proposed to distribute a Proposed 2020 Final Dividend of RMB0.0446 (tax exclusive) per Share in cash to the Shareholders. If the proposed profit distribution plan is approved by the Shareholders at the AGM, the Proposed 2020 Final Dividend is expected to be distributed on or before Tuesday, 10 August 2021 to the Shareholders.

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Due to the postponement of the AGM, the period of closure of the register of members for the purpose of ascertaining the entitlements of the Shareholders to receive the Proposed 2020 Final Dividend changed from Friday, 25 June 2021 to Friday, 2 July 2021 (both days inclusive) to Wednesday, 7 July 2021 to Monday, 12 July 2021 (both days inclusive), during which period no transfer of Shares will be effected. Shareholders whose names appear on the register of members of the Company upon the end of business hours on Monday, 12 July 2021 are entitled to receive the Proposed 2020 Final Dividend. To be eligible to receive the Proposed 2020 Final Dividend, all transfer documents must be lodged with the H Share Registrar, Computershare Hong Kong Investor Services Limited at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong (for holders of H Shares), or the Company's board office in the PRC at No. 120 Zizhuyuan Road, Haidian District, Beijing, the PRC, 100097 (for holders of Domestic Shares), no later than 4:30 p.m. on Tuesday, 6 July 2021.

The supplemental circular and supplemental notice of the AGM together with the supplemental proxy form (the "Supplemental Proxy Form"), containing, among others, the new resolution to be considered, will be despatched to the Shareholders and published on the websites of the Company and the Stock Exchange in due course. The Supplemental Proxy Form is applicable to the supplemental resolution set out in the supplemental notice and only serves as a supplement to the proxy form despatched by the Company on 19 April 2021 (the "Original Proxy Form"). The Supplemental Proxy Form will not affect the validity of the Original Proxy Form duly completed and returned in accordance with the instructions printed thereon.

The reply slip for use at the AGM sent together with the Notice to the Shareholders (the "Reply Slip") will be valid reply slip continuously applicable at the postponed AGM. The last date for returning the Reply Slip will be extended from 15 May 2021 to 10 June 2021. Shareholders who have yet to return their Reply Slip are required to complete and return the Reply Slip in accordance with the instructions printed thereon on or before the aforementioned date. For the avoidance of doubt, any Reply Slip duly completed and returned in accordance with the instructions printed thereon remains valid for the postponed AGM and the relevant Shareholders are not required to return another reply slip.

By order of the Board

Datang Environment Industry Group Co., Ltd.*

Qu Bo

Chairman

Beijing, PRC, 13 May 2021

As at the date of this announcement, the non-executive Directors are Mr. Qu Bo, Mr. Liu Quancheng, Mr. Liu Ruixiang and Mr. Li Zhenyu; the executive Directors are Mr. Wang Yanwen and Mr. Tian Dan; and the independent non-executive Directors are Mr. Ye Xiang, Mr. Mao Zhuanjian and Mr. Gao Jiaxiang.

• For identification purposes only

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