中國生物製藥：致非登記股東通知信函

(Incorporated in the Cayman Islands with limited liability) （於開曼群島註冊成立之有限公司） （Stock Code股份代號：1177） 29 April 2024 Dear Non-registered Shareholder, Arrangement of Electronic Dissemination of Corporate Communications Pursuant to the amended Rules Governing The Listing of Securities on The Stock Exchange of Hong Kong Limited (the “Stock Exchange”) (the “Listing Rules”) effective from 31 December 2023, Sino Biopharmaceutical Limited (the “Company”) has adopted new arrangement to disseminate all future corporate communications (“Corporate Communications”) to non-registered shareholders electronically. Both the English and Chinese versions of all future Corporate Communications will be available electronically on the website of the Company at and the website of the Stock Exchange at (the “Website Version”) in place of printed copies. No printed copies of Corporate Communications will be mailed out to you except by request. A notice of publication of the Website Version of a Corporate Communication, in both English and Chinese, will be sent by the Company to you by email or by post, only if your email address or postal address (as the case may be) has been provided to the Company by your bank(s), broker(s), custodian(s), nominee(s) or HKSCCNominees Limited through which your Shares are held (collectively, the “Intermediaries”). In support of electronic communication by email, non-registered shareholders are recommended to provide their functional email addresses to their Intermediaries. If the Company does not receive your functional email address or postal address from your Intermediaries via HKSCCNominees Limited, no notice of publication of the Website Version of a Corporate Communication will be sent to you. We encourage you to access Corporate Communications of the Company in electronic form on the Company’s website. If you wish to receive hard copies of all future Corporate Communications, please complete and return the Request Form on the reverse side of this letter to the Company’s branch share registrar and transfer office in Hong Kong (the “Branch Share Registrar”), Tricor Tengis Limited, at 17/F, Far East Finance Centre,16 Harcourt Road, Hong Kong or send an email to is-ecom@hk.tricorglobal.com. Please note that the hardcopy request will be valid until expiry on 31 December 2025 unless being revoked or superseded (whichever is earlier). Further request in writing will be required if a non-registered shareholder prefers to continue receiving hard copies of future Corporate Communications. The English and Chinese versions of the Company’s (i) 2023 Annual Report and (ii) Circular in relation to general mandates to issue and buy back shares; re-election of Directors; and notice of annual general meeting are available on the Company’s website and the Stock Exchange’s website respectively. The Company strongly recommends you to access the Website Version of current Corporate Communication. Should you have any queries relating to any of the above matters, please call the Branch Share Registrar’s telephone hotline at (852) 29801333 during business hours from 9:00 a.m. to 6:00 p.m. Monday to Friday, excluding public holidays or send an email to is-ecom@hk.tricorglobal.com. Yours faithfully, For and on behalf of Sino Biopharmaceutical Limited Chan Oi Nin Derek Company Secretary Note: Corporate Communications include any document(s) issued or to be issued by the Company for the information or action of holders of any of its securities or the investing public, including but not limited to (a) the directors’ report and its annual accounts together with a copy of the auditors’ report and, where applicable, its summary financial report; (b) the interim report and, where applicable, its summary interim report; (c) a notice of meeting; (d) a listing document; and (e) a circular. 各位非登記股東： 以電子方式發佈公司通訊的安排根據已於2023年12月31日生效的經修訂香港聯合交易所有限公司（「聯交所」）證券上市規則（「上市規則」），中國生物製藥有限公司（「本公司」）採納透過電子方式向其非登記股東發佈日後所有公司通訊（「公司通訊」）的新安排。

日後所有公司通訊的中、英文版本將在本公司網站和聯交所網站（「網站版本」）上提供，以代替印刷本。

除非 閣下提出要求，公司不會再向 閣下郵寄公司通訊的印刷本。

本公司將透過電子郵件方式或郵寄方式（僅於代 閣下持有股份的銀行、經紀人、託管人、代理人或香港中央結算（代理人）有限公司（統稱「中介機構」）向本公司提供 閣下的電郵地址或郵寄地址的情況下）向 閣下發出發佈公司通訊網站版本的登載通知（包括英文及中文版本）。

為了可透過電郵進行電子通訊，建議非登記股東向其中介機構提供其有效的電郵地址。

如本公司沒有收到 閣下的中介機構透過香港中央結算（代理人）有限公司提供 閣下的有效的電郵地址或郵寄地址，本公司將不會向 閣下發送登載通知。

我們鼓勵 閣下於本公司網站以電子形式瀏覽本公司的公司通訊。

若 閣下希望收取日後公司通訊的印刷版，請填妥本函背頁的申請表格並交回本公司的香港股份過戶登記分處（「股份過戶登記分處」）卓佳登捷時有限公司，地址為香港夏慤道16號遠東金融中心17樓或發送電子郵件至is-ecom@hk.tricorglobal.com。

請注意，非登記股東的印刷版本要求將直至2025年12月31日到期前有效，除非被撤銷或取代（以較早者為準）。

若非登記股東希望繼續收到日後公司通訊的印刷本，則需要再作書面要求。

本公司的(i)二零二三年年報及(ii)有關發行及回購股份之一般授權、重選董事及股東週年大會通告的通函的中、英文版本已分別上載於本公司網站及聯交所網站。

本公司建議閣下閱覽本公司本次公司通訊的網站版本。

如 閣下對本函內容有任何疑問，請致電股份過戶登記分處電話熱線(852) 29801333，辦公時間為星期一至五（公眾假期除外）上午9時正至下午6時正，或電郵至is-ecom@hk.tricorglobal.com。

代表中國生物製藥有限公司公司秘書陳凱年謹啟2024年4月29日附注：公司通訊包括本公司發佈或將予發佈以供其任何證券持有人或投資大眾參照或採取行動的任何文件，其中包括但不限於(a)董事會報告，公司年度帳目連同核數師報告以及（如適用）財務摘要報告；(b)中期報告及（如適用）中期摘要報告；(c)會議通告；(d)上市文件；及(e)通函。

Non-registered Shareholder’s information (English name and Address): 非登記股東資料（英文姓名及地址）: REQUESTFORM 申請表格To: Sino Biopharmaceutical Limited (Stock Code: 1177) (the “Company”) c/o Tricor Tengis Limited 17/F, Far East Finance Centre 16 Harcourt Road, Hong Kong 致：中國生物製藥有限公司 (股份代號：1177) (「本公司」 ) 經卓佳登捷時有限公司 香港夏慤道16號 遠東金融中心17樓REMINDER提示As a Non-Registered Shareholder1, if you wish to receive Corporate Communications2 pursuant to the amended Listing Rules, you should liaise with your bank(s), broker(s), custodian(s), nominee(s) or HKSCCNominees Limited through which your shares are held (collectively, the “Intermediaries”) and provide your email address to your Intermediaries. 作為非登記股東1，如有意根據經修訂《上市規則》收取公司通訊2， 閣下應聯絡代 閣下持有股份的銀行、經紀、託管人、代理人或香港中央結算（代理人）有限公司（統稱「中介機構」），並向閣下的中介機構提供 閣下的電子郵件地址。

I/We would like to receive current and future Corporate Communications of the Company in the manner as indicated below: 本人╱吾等希望以下列方式收取本公司的本次及日後的公司通訊：(Please mark (X) in ONLYONE of the following boxes): (請僅在下列其中一個空格內劃上「X」號): To receive printed English version ONLY of future Corporate Communications5; or 僅收取日後公司通訊的英文印刷本5；或To receive printed Chinese version ONLY of future Corporate Communications5; or 僅收取日後公司通訊的中文印刷本5；或To receive printed English and Chinese versions of future Corporate Communications. 同時收取日後公司通訊的英文和中文印刷本。

Signature : 簽署：Date : 日期：Name : 姓名： (English英文) Contact Phone Number : 聯絡電話： （in block letters請以正楷填寫） Postal Address : 郵寄地址：Notes附註：1. Non-registered Shareholder(s) refers to a person or company whose shares in the Company are held in the Central Clearing and Settlement System. 非登記股東指將所持有的本公司股份存放於中央結算及交收系統的人士或公司。

2. “Corporate Communications” refer to any document issued or to be issued by the Company for the information or action of holders of any of the Company’s securities, including but not limited to: (a) the directors’ report, its annual accounts together with a copy of the auditors’ report and, where applicable, its summary financ ial report; (b) the interim report and, where applicable, its summary interim report; (c) a notice of meeting; (d) a listing document; and (e) a circular. 「公司通訊」指由本公司發出或將予發出以供本公司任何證券的持有人參照或採取行動的任何文件，其中包括但不限於：(a)董事會報告、年度賬目連同核數師報告及財務摘要報告（如適用）；(b)中期報告及中期摘要報告（如適用）；(c)會議通告；(d)上市文件；及(e)通函。

3. Please complete all the items. If no box, or more than one box, is marked “X”, or any signature or other information is incorrectly completed, the Company reserves its right to treat this Request Form for Non-registered Shareholder(s) as void. 請閣下填妥所有資料。

倘未有在任何一個空格或在超過一個空格劃上「X」號，或任何簽名及其他內容填寫錯誤，本公司保留權利將本非登記股東申請表格視為無效。

4. For the avoidance of doubt, we do not accept any other special instructions written on this Request Form for Non-registered Shareholder(s). 為免存疑，本公司概不接受於本非登記股東申請表格上書寫的任何其他特別指示。

5. If both English and Chinese versions of a Corporate Communication are combined into one document, a printed version of the Corporate Communication in both English and Chinese will be sent to the Non-registered Shareholders requesting for any of the printed versions. 若公司通訊的英文版本及中文版本合併為一份文件，則一份載有公司通訊的英文版本及中文版本的印刷版本將寄給要求索取任一版本公司通訊印刷版本的非登記股東。

6. This request for printed copy of Corporate Communications will be valid until expiry on 31 December 2025 unless being revoked or superseded (whichever is earlier). Further request in writing will be required if a non-registered shareholder prefers to continue receiving printed copy of future Corporate Communications. 此印刷本要求將直到2025年12月31日到期前有效，除非被撤銷或取代（以較早者為準）。

如果非登記股東希望繼續收到日後的公司通訊的印刷本，則需要做進一步書面請求。

7. Should you have any queries in relation to this Request Form for Non-registered Shareholder(s), please call the enquiry hotline of the Branch Share Registrar at (852) 29801333 during business hours from 9:00 a.m. to 6:00 p.m., Monday to Friday, excluding Hong Kong public holidays. 倘閣下對本非登記股東申請表格有任何疑問，請致電股份過戶登記分處諮詢熱線(852) 29801333查詢，辦公時間為星期一至星期五（香港公眾假期除外）上午九時正至下午六時正。

PERSONALINFORMATIONCOLLECTIONSTATEMENT收集個人資料聲明“Personal Data” in this statement has the same meaning as “personal data” defined in the Personal Data (Privacy) Ordinance, Cap.486 (the “PDPO”), which may include but not limited to your name, contact telephone number, email address and mailing address. Your supply of Personal Data is on a voluntary basis for the purpose of receiving Corporate Communications in the manner chosen. Your Personal Data will be retained for such period as may be necessary for our verification and record purposes. You have the right to request access to and/or to correct the respective Personal Data in accordance with the provisions of the PDPO. Any such request for access to and/or correction of the Personal Data should be in writing by either of the following means: 本聲明中所指的「個人資料」具有香港法例第 486章《個人資料（私隱）條例》（「《私隱條例》」）中「個人資料」的涵義，包括但不限於，閣下的名稱，聯絡電話號碼，電子郵箱地址和郵寄地址。

閣下是自願向本公司提供 閣下個人資料，以便以 閣下所選之方式接收公司通訊。

閣下的個人資料將在適當期間保留作核實及記錄用途。

閣下有權根據《私隱條例》的條文要求查閱及╱或修改 閣下的個人資料。

任何該等要求均須以書面方式提出。

By mail to: Privacy Compliance Officer Tricor Tengis Limited 17/F, Far East Finance Centre,16 Harcourt Road, Hong Kong By email to: is-enquiries@hk.tricorglobal.com 郵寄至：個人資料私隱主任 卓佳登捷時有限公司 香港夏慤道16號遠東金融中心17樓電郵至：is-enquiries@hk.tricorglobal.com Please cut the mailing label and stick it on an envelope to return this Request Form to us. No postage is necessary if posted in Hong Kong. 當閣下寄回本申請表格時，請將郵寄標籤剪貼於信封上。

如在本港投寄，閣下無需支付郵費或貼上郵票。

Mailing Label郵寄標籤Tricor Tengis Limited 卓佳登捷時有限公司Freepost No.簡便回郵號碼: 10 GPO Hong Kong香港