Sihuan Pharmaceutical Holdings Group Ltd. announced on 3 June 2026 that the English and Chinese versions of its latest Annual General Meeting circular and proxy form have been uploaded to both the company website (www.sihuanpharm.com) and HKExnews (www.hkexnews.hk).

The documents can be accessed via the “Investor Relations – Announcements and Circulars” section of the company’s website. Shareholders who experience difficulty viewing the online files may request printed copies at no cost.

The accompanying Change Request Form enables investors to: • switch between electronic and printed formats; • choose English, Chinese or bilingual hard copies; and • designate an email address for future electronic notifications.

Completed forms should be returned to Tricor Investor Services Limited, the company’s Hong Kong branch share registrar, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong. No postage is required for local mail.

Enquiries can be directed to Tricor’s hotline at (852) 2980 1333 during weekday business hours or via email to sihuanpharm-ecom@vistra.com.

The notification was issued by Order of the Board and signed by Chairman and Executive Director Dr. Che Fengsheng.