Beijing SinoHytec Company Limited — Proxy Solicitation & Information Statement 2025

Nov 28, 2025

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.

亿华通 北京億華通科技股份有限公司 SinoHytec Beijing SinoHytec Co., Ltd.

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

(Stock Code: 2402)

NOTICE OF H SHARE CLASS MEETING

NOTICE IS HEREBY GIVEN that the H Share Class Meeting (the "H Share Class Meeting") of Beijing SinoHytec Co., Ltd. (the "Company") will be held at 2:00 p.m. on Monday, December 15, 2025 at Room C701, 7th Floor, Block C, Building B-6, Dongsheng Science Park, Zhongguancun, No. 66, Xixiaokou Road, Haidian District, Beijing, the PRC (or immediately after the conclusion of the extraordinary general meeting and the A Share class meeting of the Company to be convened and held on the same date and at the same place) to consider and, if thought fit, approve the following resolution:

SPECIAL RESOLUTION

To consider and approve the proposed grant of general mandate to the board (the "Board") of directors (the "Director(s)") of the Company to issue, allot and deal with additional overseas listed foreign share(s) of the Company (the "H Share(s)") (including sale and transfer of any treasury shares of the Company) not exceeding 20% of the total number of shares of the Company in issue as at the date of passing this proposed resolution (excluding any treasury shares of the Company) for a period from the date of passing of this proposed resolution at the H Share Class Meeting until earliest of (i) the conclusion of the next annual general meeting of the Company; (ii) the expiration of the period within which the next annual general meeting of the Company is required by the articles of association of the Company or other applicable laws to be held; or (iii) the date of revocation or variation of the authority given under this proposal by a special resolution by the shareholders of the Company at a general meeting, and to authorise the Board and its delegates (i) to make amendments to the articles of association of the Company as it thinks fit so as to reflect the new share capital structure upon the issue or allotment of additional H Shares pursuant to the general mandate; and (ii) to execute and implement all such documents, do all such acts and things or take any steps in connection with and to give effect to the general mandate to the extent permitted by applicable laws and regulations.

By order of the Board

Beijing SinoHytec Co., Ltd.

ZHANG Guoqiang

Chairman of the Board

Beijing, the PRC, November 28, 2025

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As of the date of this notice, the board of directors of the Company comprises Mr. Zhang Guoqiang, Ms. Song Haiying and Ms. Dai Dongzhe as executive directors, Mr. Song Feng as non-executive director, Ms. Zhang Hongli as employee representative director, and Mr. Ji Xuehong, Mr. Chan So Kuen and Mr. Li Zhijie as independent non-executive directors.

Notes:

1. Pursuant to the Rule 13.39(4) of the Rules Governing the Listing of Securities (the "Listing Rules") on The Stock Exchange of Hong Kong Limited (the "Stock Exchange"), voting on all resolutions at a general meeting shall be by way of poll. The poll result of the H Share Class Meeting will be published on the websites of the Stock Exchange (www.hkexnews.hk) and the Company (www.sinohytec.com) in accordance with the requirements of the Listing Rules. For the avoidance of doubt, holders of treasury shares of the Company, if any, shall abstain from voting at the H Share Class Meeting.

2. The record date for determining the entitlement of the shareholders of the Company (the "Shareholders") to attend and vote at the H Share Class Meeting will be at 4:30 p.m. on Friday, December 12, 2025. For the purpose of determining the entitlement of the Shareholders to attend and vote at the H Share Class Meeting, all properly completed transfer forms accompanied by the relevant share certificates must be lodged for registration with the H share registrar of the Company, Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong (for H Shareholders), no later than 4:30 p.m. on Friday, December 12, 2025. For the avoidance of doubt, any person(s) who become Shareholder(s) after 4:30 p.m., Friday, December 12, 2025 will not be entitled to attend and vote at the H Share Class Meeting.

3. Any Shareholder who is entitled to attend and vote at the H Share Class Meeting may appoint one or more proxies to attend and vote on his/her behalf. A proxy needs not be a Shareholder. If the Shareholder appoints more than one proxy, his/her proxies may only vote by poll.

4. The instrument appointing a proxy shall be in writing under the hand of the appointor or his/her attorney duly authorised in writing. If the Shareholder is a legal entity, then the relevant appointing document must be either under seal or under the hand of its director or attorney duly authorised. If the instrument appointing a proxy is signed by a person duly authorised by the Shareholder, the powers of attorney or other instruments of authorisation shall be notarised. For H Shareholders, the aforementioned documents must be lodged with the H share registrar of the Company, Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong as soon as possible but in any event by not later than 24 hours before the time fixed for holding of the H Share Class Meeting (i.e. not later than 2:00 p.m. on Sunday, December 14, 2025) or any adjournment or postponement thereof. Completion and return of the form(s) of proxy shall not preclude you from attending and voting in person at the H Share Class Meeting or any adjourned or postponed meeting(s) if you so wish.

5. Shareholders shall produce their identification documents when attending the H Share Class Meeting.

6. If a proxy attends the H Share Class Meeting on behalf of a Shareholder, he/she should produce his/her identification document and the power of attorney or other documents signed by the appointer or his/her attorney, which specifies the date of its issuance. If a representative of a corporate Shareholder attends the H Share Class Meeting, such representative shall produce his/her identification document and the notarised copy of the resolution passed by the board of directors or other authority or notarised copy of any authorisation documents issued by such corporate Shareholder.

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1. The H share registrar of the Company in Hong Kong is Tricor Investor Services Limited and its address and contact information are as follows:

17/F, Far East Finance Centre 16 Harcourt Road

Hong Kong

Email: is-enquiries@hk.tricorglobal.com Tel: (852) 2980 1333

Fax: (852) 2810 8185

1. The address and contact information of the office of the Board located at the registered office of the Company in the PRC are as follows:

Room C701, 7th Floor, Block C

Building B-6, Dongsheng Science Park

Zhongguancun, No. 66, Xixiaokou Road

Haidian District

Beijing, China

Contact person: Kang Zhi (康智)

Tel: +86 10 62796418 821

Email: sinohytec@autoht.com

1. Pursuant to the articles of association of the Company, in respect of any joint Shareholder of any share of the Company, only the joint Shareholders whose name stands first in the register of Shareholders has the rights to receive this notice or other document of the Company, and any notice given to such person shall be deemed to have been given to all joint Shareholders in respect of the shares. Any of the joint Shareholders may sign the form of proxy, but if more than one joint Shareholder is present in person or by proxy, a vote by the joint Shareholder in priority, whether in person or by proxy, shall be accepted as the sole vote on behalf of the remaining joint Shareholders. For this purpose, the order of precedence of the joint Shareholders shall be determined by the rank of such joint Shareholders in the register of Shareholders in relation to the shares concerned.

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