SICC Co., Ltd. — Proxy Solicitation & Information Statement 2026

May 18, 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.

SICC CO., LTD.

山東天岳先進科技股份有限公司

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

(Stock Code: 2631)

SUPPLEMENTAL NOTICE OF 2025 ANNUAL GENERAL MEETING

Reference is made to the circular (the "First Circular") and the notice (the "First Notice") of SICC CO., LTD. (the "Company"), both dated 8 May 2026 in relation to the 2025 Annual General Meeting (the "AGM"), and the supplemental circular dated 18 May 2026, which sets out details of the resolutions to be proposed at the AGM for approval by the Shareholders.

Supplemental notice is hereby given that the AGM will be held as originally planned at 14:30 on 29 May 2026 at the conference room of SICC Company, No. 99 South Tianyue Road, Huaiyin District, Jinan City, Shandong Province of the PRC. In addition to the resolutions set out in the First Notice, the AGM will also consider and, if thought fit, pass the following additional resolution:

ORDINARY RESOLUTION

1. To consider and approve the resolution regarding the increase of the limit for foreign exchange derivatives trading business.

By order of the Board

SICC CO., LTD.

Mr. Zong Yanmin

Chairman of the Board,

Executive Director and General Manager

18 May 2026

Notes:

(A) Details of the above resolution are set out in the supplemental circular (the "Supplemental Circular") of the Company dated 18 May 2026. Unless the context otherwise requires, terms used in this supplemental notice of the 2025 annual general meeting shall have the same meanings as defined in the Supplemental Circular.

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(B) The revised proxy form (the “Revised Proxy Form”) applicable to the AGM has been uploaded to the website of the Stock Exchange of Hong Kong Limited (www.hkexnews.com.hk) and the Company’s website (www.sicc.cc), and has been despatched to H shareholders in accordance with their chosen means of receiving corporate communications. Any shareholder entitled to attend and vote at the AGM may appoint one or more proxies (if he/she holds more than one share) to attend and vote on his/her behalf at the meeting. A proxy need not be a shareholder. However, if more than one proxy is appointed, the class and number of shares each proxy represents shall be specified. H shareholders who wish to appoint a proxy to attend the AGM on their behalf are requested to complete the Revised Proxy Form in accordance with the instructions printed on the enclosed Revised Proxy Form and return it to the H share registrar of the Company, Computershare Hong Kong Investor Services Limited, at Shops 1712–1716, 17/F, Hopewell Centre, 183 Queen’s Road East, Wan Chai, Hong Kong, not less than 24 hours before the time appointed for the holding of the AGM or any adjournment thereof (as the case may be). After completing and returning the Revised Proxy Form, shareholders may still attend and vote in person at the AGM or any adjournment thereof if they so wish.

(C) Shareholders who wish to appoint a proxy to attend the AGM on their behalf and have not yet returned the proxy form (the “Original Proxy Form”) issued by the Company on 8 May 2026 need only return the Revised Proxy Form. In such case, the Original Proxy Form need not be returned to the Company’s H share registrar.

(D) Shareholders who have already submitted the Original Proxy Form should note the following:

(a) if a shareholder does not submit the Revised Proxy Form, the Original Proxy Form (if duly completed) will be regarded as a valid proxy form submitted by the shareholder. The proxy appointed under the Original Proxy Form will be entitled to vote on any resolution duly proposed at the AGM (including the additional resolution contained in the supplemental notice of the AGM published by the Company on 18 May 2026) in accordance with the shareholder’s previous instructions or, if no instructions are given, at his/her own discretion;

(b) if a shareholder submits the Revised Proxy Form not less than 24 hours before the time appointed for the holding of the AGM, the Revised Proxy Form (if duly completed) will be regarded as a valid proxy form submitted by the shareholder; and

(c) if a shareholder submits the Revised Proxy Form after the deadline set out in the supplemental notice of the AGM, the Revised Proxy Form will be deemed invalid. The Original Proxy Form previously submitted by the shareholder will not be revoked. The Original Proxy Form (if duly completed) will be regarded as a valid proxy form. The proxy appointed under the Original Proxy Form will also be entitled to vote on any resolution duly proposed at the AGM (including the additional resolution in the supplemental notice of the AGM published by the Company on 18 May 2026) in accordance with the shareholder’s previous instructions or, if no instructions are given, at his/her own discretion.

(E) For details of the other resolutions to be passed at the AGM, the qualifications for attending the AGM, the Original Proxy Form, registration procedures, closure of the register of members, the reply slip and other related matters concerning the AGM, please refer to the First Notice.

As at the date of this notice, the Board comprises: (i) Mr. Zong Yanmin, Mr. Gao Chao and Mr. Wang Junguo as executive Directors; (ii) Mr. Qiu Yufeng and Ms. Li Wanyue as non-executive Directors; and (iii) Mr. Li Honghui, Ms. Liu Hua and Mr. Lai Kwok Hung Alex as independent non-executive Directors.

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