3SBio Inc. (the “Company”) implements the following arrangements for electronic dissemination of Corporate Communications^{(Note 1)} pursuant to Rule 2.07A(1) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited and the articles of association of the Company:

Please note that, as of 6 March 2024, both the English and Chinese versions of the Company’s all future Corporate Communications will be available electronically on the website of the Company at www.hzkaq15.cn and the HKExnews website at www.hkexnews.hk in place of printed copies.

● For registered shareholders, please refer to: Notification Letter to Registered Shareholders (with Reply Form)

● For Non-registered Holders^{(Note 2)} , please refer to: Notification Letter to Non-registered Holders (with Reply Form)

Should you have any queries relating to this matter, please contact the the Company’s share registrar, Computershare Hong Kong Investor Services Limited, at (852) 2862 8688.

Notes:

. 1. “Corporate Communications” refer to any documents issued or to be issued by the Company for the information or action of holders of any of its securities, including but not limited to (a) annual report, its annual accounts together with the auditors’ report and, where applicable, its summary financial report; (b) interim report and, where applicable, its summary interim report; (c) notices of meeting; (d) listing documents; (e) circulars and (f) proxy forms.

. 2. “Non-registered Holder” means such person or company whose shares are held in The Central Clearing and Settlement System (CCASS) and who has notified the Company from time to time through Hong Kong Securities Clearing Company Limited that such person or company wishes to receive Corporate Communications.