Shida Shenghua New Materials Group Co., Ltd. Announcement on the Application for H-share Issuance and Listing to the Hong Kong Stock Exchange and Publication of Application Materials

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Stock Code: 603026 Stock Short Name: Shidashenghua Announcement No.: Lin 2026-024

Shidashenghua New Materials Group Co., Ltd.

Announcement on Submitting an Application for the Listing and Offering of H Shares to the Hong Kong Stock Exchange and Publishing the Application Materials

The board of directors of the Company and all directors warrant that the contents of this announcement do not contain any false statements, misleading representations or material omissions, and undertake individual and joint liability for the truthfulness, accuracy and completeness of its contents.

Shidashenghua New Materials Group Co., Ltd. (the “Company”, as referred to below) submitted on April 1, 2026 to The Stock Exchange of Hong Kong Limited (the “Hong Kong Stock Exchange”, as referred to below) an application for an initial public offering of overseas listed foreign shares (H shares) and the listing of such shares on the Main Board of the Hong Kong Stock Exchange (the “Current Offering and Listing”, as referred to below), and on the same day published the application materials for the Current Offering and Listing on the website of the Hong Kong Stock Exchange. The application materials are prepared and published by the Company in accordance with the requirements of the Securities and Futures Commission of Hong Kong (the “Hong Kong SFC”, as referred to below) and the Hong Kong Stock Exchange, and are a draft version. The information contained therein may be updated and revised from time to time. Investors should not make any investment decision based on such information.

Given that the subscription and purchase targets for the Current Offering and Listing are limited only to offshore investors that satisfy the relevant conditions and domestic qualified investors that are entitled to conduct offshore securities investments in accordance with the relevant laws and regulations of the PRC, the Company will not publish the application materials on the websites of domestic securities trading venues or on media that satisfy the conditions prescribed by regulatory authorities. However, for domestic investors to obtain timely access to the information disclosed in relation to the Current Offering and Listing and the Company’s other relevant information, this announcement provides a query link to the application materials on the website of the Hong Kong Stock Exchange for consultation:

Chinese link:

English link:

It should be specially noted that this announcement is made solely so that domestic investors can promptly understand the relevant information relating to the Current Offering and Listing. This announcement and the application materials published on the website of the Hong Kong Stock Exchange do not constitute, nor may they be deemed to constitute, an offer or an invitation to any individual or entity to acquire, purchase or subscribe for the Company’s overseas listed foreign shares (H shares) in the Company’s current initial public offering.

The Current Offering and Listing of the Company is still subject to multiple conditions (including but not limited to obtaining filing with the China Securities Regulatory Commission, approvals, authorizations or filings from the Hong Kong SFC, the Hong Kong Stock Exchange and other relevant regulatory authorities), and can be implemented only after taking into comprehensive consideration market conditions and other factors. There remains uncertainty regarding this matter. The Company will, in accordance with the provisions and requirements of relevant laws and regulations and based on the progress of the relevant matters, promptly fulfill its information disclosure obligations. Investors are kindly requested to pay attention to investment risks.

This announcement is hereby made.

Board of Directors of Shidashenghua New Materials Group Co., Ltd.

April 2, 2026

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