Beijing SinoHytec Co., Ltd. (SinoHytec) has issued notice of an H-Share Class Meeting scheduled for 2:00 p.m. on Thursday, 17 September 2026, at Room C701, 7/F, Block C, Building B-6, Dongsheng Science Park, Haidian District, Beijing. The session will follow the company’s Extraordinary General Meeting and A-Share Class Meeting to be held at the same venue earlier that day.

Key agenda item • Special Resolution: Authorise the Board to issue, allot, and deal with additional overseas-listed foreign shares (H Shares), including the sale or transfer of any treasury shares, up to a maximum of 20 % of the company’s issued share capital (excluding any treasury shares) as at the date the resolution is passed. • Validity Period: From the date of approval until the earliest of (i) the conclusion of the next annual general meeting, (ii) the statutory deadline for holding the next annual general meeting, or (iii) a revocation or variation of the mandate by shareholders at a general meeting. • Ancillary Powers: The Board, and its delegates, will be authorised to amend the company’s Articles of Association to reflect changes in share capital and to execute all documents necessary to implement the mandate.

Voting and record date • Voting Method: All resolutions will be decided by poll in accordance with Hong Kong Listing Rule 13.39(4). • Record Date: Shareholders must be on the register by 4:30 p.m. on Friday, 11 September 2026 to be eligible to attend and vote. Transfer documents for H-Shareholders must be lodged with Tricor Investor Services Limited by that time. • Proxies: Eligible shareholders may appoint one or more proxies; completed proxy forms must be deposited with Tricor no later than 24 hours before the meeting (i.e., by 2:00 p.m. on Wednesday, 16 September 2026).

Board composition The Board currently comprises three executive directors, one non-executive director, one employee representative director, and three independent non-executive directors.

Registrar and contact details H-Share Registrar: Tricor Investor Services Limited, 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong. Company Office: Room C701, 7/F, Block C, Building B-6, Dongsheng Science Park, No. 66 Xixiaokou Road, Haidian District, Beijing.

The notice was authorised by Chairman Zhang Guoqiang and dated 28 August 2026.