JOINN Laboratories (China) Co., Ltd. — Proxy Solicitation & Information Statement 2024

May 28, 2024

JOINN LABORATORIES (CHINA) CO., LTD. 北京昭衍新藥研究中心股份有限公司

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

(Stock code: 6127)

PROXY FORM

FOR THE SECOND H SHARE CLASS MEETING OF 2024 TO BE HELD ON THURSDAY, 20 JUNE 2024 (OR AT ANY ADJOURNMENT THEREOF)

I/We [(Note][1)] of [(Note][2)]

being the registered holder(s) of [(Note][3)] H shares of RMB1.00 each in the share capital of the JOINN Laboratories (China) Co., Ltd. (the “ Company ”), hereby appoint the Chairman of the meeting [(Notes][4][and][5)] or

of (address)

to act as my/our proxy to attend and vote for me/us and on my/our behalf at the second H share class meeting of 2024 of the Company (the “ H Share Class Meeting ”) to be held on Thursday, 20 June 2024 after the conclusion of the Company’s 2023 Annual General Meeting and A Share Class Meeting at Meeting Room, Pullman Beijing South, 12 Ronghua South Road, Beijing Economic-Technological Development Area, Beijing, the People’s Republic of China (the “ PRC ”), 100176 and at any adjournment thereof and to exercise all rights conferred on proxies according to the following indications under laws, regulations and the articles of association of the Company in respect of the resolution set out in the notice of the H Share Class Meeting as hereunder, or if no such indication is given, as my/our proxy thinks fit.

I/We wish my/our proxy to vote as indicated below in respect of the resolutions to be proposed at the meeting.

	No. SPECIAL RESOLUTIONS FOR (Note 6)	AGAINST (Note 6) ABSTAIN (Note 6) 2024 nserted, this proxy form will be deemed to relate to all shares
	1 The proposed change of the registered capital of the Company
	2 The proposed amendments to the Articles of Association of the Company
	3 The grant of the A Share Repurchase Mandate and the H Share Repurchase Mandate
	Signature (Note 7): Dated: Notes: 1. Please insert full name(s) in BLOCK CAPITALS. 2. Please insert full address(es) in BLOCK CAPITALS. 3. Please insert the number of shares registered in your name(s) to which this proxy form relates. If no number is i of the Company registered in your name(s).

1. If you are a Shareholder who is entitled to attend and vote at the meeting, you are entitled to appoint one or more proxies to attend instead of you and to vote on your behalf. A proxy need not be a Shareholder of the Company, but must attend the meeting in person in order to represent you.

2. If a proxy other than the Chairman of the meeting is preferred, cross out the words “the Chairman of the meeting” and insert the full name and address of the proxy (or proxies) desired in the space provided. If no name is inserted, the Chairman of the meeting will act as your proxy. Any changes made to this proxy form must be initialed by the person who signs it.

3. IMPORTANT: IF YOU WISH TO VOTE FOR THE RESOLUTION, TICK THE APPROPRIATE BOX MARKED “FOR”. IF YOU WISH TO VOTE AGAINST THE RESOLUTION, TICK THE APPROPRIATE BOX MARKED “AGAINST”. IF YOU WISH TO ABSTAIN FROM VOTING, TICK THE APPROPRIATE BOX MARKED “ABSTAIN”. If you return this proxy form without indicating as to how your proxy is to vote on any particular matter, the person appointed as your proxy will exercise his/her discretion as to whether he/she votes and, if so, how and, unless instructed otherwise, he/she may also vote or abstain from voting as he/she thinks fit on any other business (including amendments to resolutions) which may properly come before the meeting. The shares abstained will be counted in the calculation of the required majority.

4. This proxy form must be signed and dated by the Shareholder or his/her attorney duly authorized in writing. If the Shareholder is a company, it should execute this proxy form under its common seal or by its directors or (a) person(s) duly authorised to sign on its behalf. In case of joint holders, only the person whose name stands first on the register of members may attend and vote at the H Share Class Meeting, either in person or by proxy.

5. To be valid, this proxy form, together with the power of attorney or other authority, if any, under which it is signed, or a notarized certified copy of such power of attorney or authority, must be completed and 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 (for holders of H shares), at least 24 hours before the time appointed for holding the meeting or any adjournment thereof.

6. Completion and delivery of this proxy form will not preclude you from attending and voting at the meeting in person if you so wish. 10. Shareholders or their proxies attending the meeting shall produce their identity documents.

PERSONAL INFORMATION COLLECTION STATEMENT

Your supply of your and your proxy’s (or proxies’) name(s) and address(es) is on a voluntary basis for the purpose of processing your request for the appointment of a proxy (or proxies) and your voting instructions for the meeting of the Company (the “ Purposes ”). We may transfer your and your proxy’s (or proxies’) name(s) and address(es) to our agent, contractor, or third party service provider who provides administrative, computer and other services to us and to such parties who are authorised by law to request the information or are otherwise relevant for the Purposes and need to receive the information. Your and your proxy’s (or proxies’) name(s) and address(es) will be retained for such period as may be necessary to fulfil the Purposes. You/your proxy (or proxies) has/have the right to request access to and/or correction of the relevant personal data in accordance with the provisions of the Personal Data (Privacy) Ordinance and any such request should be in writing by mail to Tricor Investor Services Limited at the above address.