The board of directors of Sino Energy International Holdings Group Limited announced that with effect from 8 April 2022: Ms. Cai Xiuman (Ms. Cai) has resigned as an executive Director, an authorised representative of the company under Rule 3.05 of The Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited and the process agent of the company for accepting on its behalf service of process or notices to be served on the company in Hong Kong under the Companies Ordinance and Rule 19.05(2) of the Listing Rules due to other business commitments; and Mr. Zhang Wenbin (Mr. Zhang) has resigned as an executive Director and a joint chief executive of the Company due to other business commitments. The Board announced that Mr. Kwong Yuk Lap (Mr. Kwong) has been appointed as an executive Director with effect from 8 April 2022. Mr. Kwong is currently a director of Jinmaiwang Group Limited, a subsidiary of the Company.