Ab&B Bio-Tech CO., LTD. JS — Proxy Solicitation & Information Statement 2026

May 7, 2026

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this notice, 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 notice.

中華總會

Ab&B Bio-Tech

Ab&B Bio-Tech CO., LTD. JS

江蘇中華大學圖生物科技股份有限公司

(A joint stock company established in the People's Republic of China with limited liability)

(Stock Code: 2627)

NOTICE OF THE FIRST EXTRAORDINARY GENERAL MEETING OF 2026

Notice is hereby given that the first extraordinary general meeting of 2026 (the "EGM") of Ab&B Bio-Tech CO., LTD. JS (the "Company") will be held at No. 32, Xinglin Road, Medical High-tech Zone, Taizhou, Jiangsu, PRC, on Wednesday, May 27, 2026 at 10 a.m. with attendance and participation both on-site and online via the eVoting Portal, for the purpose of considering and, if thought fit, approving the following resolutions. Unless otherwise defined, capitalized terms used herein shall have the same meanings as those defined in the circular of the Company dated May 7, 2026 (the "Circular")

SPECIAL RESOLUTIONS

1. To consider and approve the abolition of the supervisory committee.
2. Subject to the passing of the abolition of the supervisory committee, to consider and approve the Proposed Amendments to the Articles of Association.

ORDINARY RESOLUTIONS

1. Subject to the passing of the Proposed Amendments to the Articles of Association, to consider and approve the amendment of certain internal corporate governance policies.
2. Subject to the passing of the Proposed Amendments to the Articles of Association, to consider and approve the appointment of Ms. LUI Mei Ka as independent non-executive Director.
3. To consider and approve the appointment of Prism as auditors of the Company and to authorize the Board to fix their remuneration.

By order of the Board

Ab&B Bio-Tech CO., LTD. JS

Mr. AN Youcai

Executive Director, chairman of our

Board and general manager

Hong Kong, May 7, 2026

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Notes:

1. The resolutions at the meeting will be taken by poll (except where the chairman decides to allow a resolution relating to a procedural or administrative matter to be voted on by a show of hands) pursuant to the articles of association of the Company and the Listing Rules. The results of the poll will be published on the websites of The Stock Exchange of Hong Kong Limited at www.hkexnews.hk and the Company at www.abbbio.com in accordance with the Listing Rules.

2. Shareholders may attend the EGM (or any adjournment thereof) online through the eVoting Portal using the personalized login credentials provided by the Company's share registrar, Tricor Investor Services Limited, by post. Shareholders attending the EGM through the eVoting Portal will be able to vote and submit questions relevant to the proposed resolution online. Shareholders participating in the EGM virtually will also be counted towards the quorum. For beneficial owners or non-registered Shareholders whose Shares are held in the Central Clearing and Settlement System (CCASS) through banks, brokers, custodians or HKSCC Nominees Limited who wish to virtually attend the EGM, vote and submit questions relevant to the proposed resolution online, they should (i) contact and instruct their banks, brokers, custodians or HKSCC Nominees Limited that they want to attend the EGM, vote and submit questions online; and (ii) provide their email address to their banks, brokers, custodians or HKSCC Nominees Limited before the time limit required by the relevant banks, brokers, custodians or HKSCC Nominees Limited for the necessary arrangements and the personalized login credentials will be sent to the email address provided by the banks, brokers, custodians or HKSCC Nominees Limited.

3. For the purpose of determining the list of Shareholders who are entitled to attend the EGM, the register of members of the Company will be closed from May 21, 2026 to May 27, 2026, both days inclusive, during which period no transfer of Shares will be registered. In order to be eligible to attend and vote at the EGM, holders of the H shares whose transfers have not been registered shall deposit all transfer documents accompanied by the relevant share certificates at the Company's H share registrar, Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong not later than 4:30 p.m. on Wednesday, May 20, 2026 (Hong Kong time) for registration.

4. Shareholders whose names appear on the company's register of members on Wednesday, May 27, 2026 are entitled to attend the EGM and vote thereat.

5. A shareholder entitled to attend and vote at the EGM may appoint one or more proxies to attend and vote on his behalf. A proxy need not be a shareholder of the Company. Where a shareholder appoints more than one proxy, his proxies can only vote on a poll.

6. The instrument appointing a proxy must be in writing under the hand of a shareholder or his attorney duly authorized. If the shareholder is a corporation, that instrument must be either under its common seal or under the hand of its director(s) or duly authorized attorney(ies). If that instrument is signed by an attorney of a shareholder, the power of attorney or other document authorizing that attorney to sign must be notarized.

7. In order to be valid, the form of proxy together with the notarized power of attorney or other authorization document (if any) must be deposited at the H share registrar of the Company, Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong not less than 24 hours before the time fixed for the meeting (i.e. not later than 10 a.m. on Tuesday, May 26, 2026 (Hong Kong time)).

8. A vote given in accordance with the terms of an instrument of proxy shall be valid notwithstanding the death or loss of capacity of the appointer, or the revocation of the proxy or of the authority under which the form of proxy was signed, or the transfer of shares in respect of which the proxy is given, provided that no notice in writing of these matters shall have been received by the Company prior to the commencement of the EGM.

9. Where there are joint registered holders of any share, any one of such joint holders may vote, either in person or by proxy, in respect of such share as if he/she was solely entitled thereto, but if more than one of such joint holders are present at the EGM, whether in person or by proxy, the joint registered holder present whose name stands first on the register of members of the Company in respect of the shares shall alone be entitled to vote in respect thereof. Where there are joint registered holders of any share, any one of such joint holders may vote, either in person or by proxy, in respect of such share as if he/she was solely entitled thereto, but if more than one of such joint holders are present at the EGM, whether in person or by proxy, the joint registered holder present whose name stands first on the register of members of the Company in respect of the shares shall alone be entitled to vote in respect thereof.

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1. Shareholders or their proxies shall produce their identification documents for inspection when attending the EGM.

2. The EGM is expected to last for no more than half a business day. Shareholders and proxies attending the meeting on-site shall be responsible for their own travel and accommodation expenses.

3. Contact information of the meeting:
   Contact Person: An Ziqiao
   Telephone: (86) 134 6666 7808
   Email: anziqiao@abbbio.com.cn
   Address: No. 32, Xinglin Road, Medical High-tech Zone, Taizhou, Jiangsu, PRC

As at the date of this notice, the Board comprises: (i) Mr. AN Youcai, Ms. LI Runxiang and Mr. HE Yiming as executive Directors; (ii) Mr. CHENG Qianwen, Mr. YU Jianlin and Mr. DU Mu as non-executive Directors; and (iii) Mr. LI Xiangming, Mr. LI Jianjun and Mr. CHEN Chengbei as independent non-executive Directors.

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