Simplified Report on Change in Equity

Stock Code: 300429 Stock Abbreviation: Strong New Materials

Changzhou Strong New Materials Co., Ltd.

Simplified Report on Change in Equity

Listed Company Name: Changzhou Strong New Materials Co., Ltd.

Listing Venue: Shenzhen Stock Exchange

Stock Abbreviation: Strong New Materials

Stock Code: 300429

Information Disclosure Obligor: Shanghai Baoding Investment Management Co., Ltd. (representing Baoding Ruicheng Private Equity Investment Fund)

Correspondence Address: Room 101, No. 1969 Luchao Port Road, Lingang New Area, China (Shanghai) Pilot Free Trade Zone

Nature of Equity Change: Increase in shares (agreement transfer)

Report Signing Date: August 10, 2026

Statement of Information Disclosure Obligor

1. This report is prepared in accordance with the Securities Law of the People's Republic of China, the Administrative Measures for the Takeover of Listed Companies, the Standards for the Contents and Formats of Information Disclosure by Companies Offering Securities to the Public No. 15—Report on Change in Equity, and other relevant laws, regulations, and normative documents.

2. The Information Disclosure Obligor has obtained the necessary authorization and approval to sign this report, and its performance does not violate or conflict with any terms in the Information Disclosure Obligor's articles of association or internal rules.

3. In accordance with the Securities Law of the People's Republic of China and the Administrative Measures for the Takeover of Listed Companies, this report fully discloses the changes in the shares held by the Information Disclosure Obligor in Changzhou Strong New Materials Co., Ltd. (hereinafter referred to as "Strong New Materials").

4. As of the date of signing this report, except for the information disclosed herein, the aforementioned Information Disclosure Obligor has not increased or decreased its equity in Strong New Materials through any other means.

5. This agreement transfer is subject to compliance review by the Shenzhen Stock Exchange before the transfer procedures can be processed at the Shenzhen Branch of China Securities Depository and Clearing Corporation Limited. There is uncertainty regarding whether the transaction will be completed; investors are advised to be aware of investment risks.

6. This equity change is conducted based on the materials contained in this report. The Information Disclosure Obligor has not entrusted or authorized any other person to provide information not contained in this report or to make any explanations or statements regarding this report.

7. The Information Disclosure Obligor warrants that this report does not contain any false records, misleading statements, or major omissions, and assumes individual and joint legal liability for its authenticity, accuracy, and completeness.

Table of Contents

Section I Definitions: 4

Section II Information Disclosure Obligor: 5

Section III Purpose of Equity Change: 7

Section IV Method of Equity Change: 8

Section V Transactions of Listed Shares by Information Disclosure Obligor in the Past 6 Months: 13

Section VI Other Major Matters: 14

Section VII Statement of Information Disclosure Obligor: 15

Section VIII Documents Available for Inspection: 16

Section I Definitions

In this report, unless the context otherwise requires, the following abbreviations have the following specific meanings: