The board of directors of Sino Energy International Holdings Group Limited announced that Mr. Yip Hing Fai (Mr. Yip) has resigned as the company secretary of the company and ceased to act as an authorized representative of the company for accepting service of process or notice on behalf of the company in Hong Kong under Part 16 of the Companies Ordinance (Chapter 622 of the Laws of Hong Kong) with effect from July 3, 2017.