POSTPONEMENT OF ANNUAL GENERAL MEETING AND H SHARE CLASS MEETING

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.(A joint stock company incorporated in the People’s Republic of China with limited liability) (Stock Code: 2402) POSTPONEMENT OF ANNUAL GENERAL MEETING AND H SHARE CLASS MEETING References are made to (i) the 2023 annual report of Beijing SinoHytec Co. Ltd. (the “Company”); (ii) the Company’s announcement dated April 26 2024 in relation to profit distribution and capital reserve capitalization plan for 2023 the proposed change of registered capital and amendments to the articles of association; and (iii) the Company’s announcement dated April 26 2024in relation to resignation and proposed appointment of supervisors (together the “PreviousAnnouncements”).As disclosed in the Previous Announcements the annual general meeting of the Company (the “AGM”) and the 2024 second H share class meeting of the Company (the “H Share ClassMeeting”) were scheduled to be held on Friday June 14 2024. The board of directors of the Company hereby announces it has come to the Company’s attention that the Company’s auditors Da Hua Certified Public Accountants (Special General Partnership) (“Da Hua”) has been suspended from engaging in securities service business for a term of six months from May 10 2024 by the Jiangsu Regulatory Bureau of China Securities Regulatory Commission in relation to Da Hua’s work not related to the Company. For prudent sake the AGM and the H Share Class Meeting will be postponed to Friday June 28 2024.As disclosed in the Previous Announcements the record date for determining the entitlement of the Company’s shareholders to attend and vote at the AGM and/or the H Share Class Meeting was scheduled to be the close of business on Friday June 7 2024 which will remain unchanged.For the purpose of determining the entitlement of the Shareholders to attend and vote at the AGM and/or the H Share Class Meeting all properly completed transfer forms accompanied by the relevant share certificates must be lodged for registration with the H Share registrar Tricor Investor Services Limited at 17/F Far East Finance Centre 16 Harcourt Road Hong Kong (for H Shareholders) no later than 4:30 p.m. on Friday June 7 2024.– 1 –A circular containing details of the AGM and the H Share Class Meeting will be published in due course.By order of the Board Beijing SinoHytec Co. Ltd.ZHANG Guoqiang Chairman of the Board Beijing the PRC June 4 2024 As of the date of this announcement the Board comprises Mr. Zhang Guoqiang Ms. Song Haiying and Ms. Dai Dongzhe as executive Directors; Ms. Teng Renjie and Mr. Song Feng as non-executive Directors; and Mr. Liu Xiaoshi Mr. Ji Xuehong Mr. Chan So Kuen and Mr. Li Zhijie as independent non-executive Directors.–2–