Guangzhou Lushan New Materials Co., Ltd. Announcement on Providing Guarantees for Subsidiaries

Securities Code: 603051 Securities Abbreviation: Lushan New Materials Announcement No.: 2026-004

Guangzhou Lushan New Materials Co., Ltd.

Announcement on Providing Guarantees for Subsidiaries

The company’s board of directors and all directors guarantee that the contents of this announcement do not contain any false records, misleading statements, or significant omissions, and assume legal responsibility for the authenticity, accuracy, and completeness of the content.

Important Content Reminder:

● Name of the guaranteed party: The wholly-owned subsidiary of Guangzhou Lushan New Materials Co., Ltd. (hereinafter referred to as “the Company”), Jiangsu Lushan New Materials Co., Ltd. (hereinafter referred to as “Jiangsu Lushan”);

● Amount of guarantee and actual guarantee balance provided: The principal amount of the guarantee for Jiangsu Lushan is 150 million yuan. As of the date of this announcement, the actual guarantee balance provided by the company for Jiangsu Lushan is 110.5322 million yuan;

● Is there a counter-guarantee for this guarantee: No;

● Total number of overdue external guarantees: The company has no overdue external guarantees.

● Special risk reminder: As of the date of this announcement, the external guarantee limit approved by the company’s 2024 annual shareholders’ meeting is 2.6 billion yuan, accounting for 166.69% of the company’s most recent audited net assets. Investors are advised to pay attention to the risks.

I. Overview of the Guarantee Situation

The company held the 26th meeting of the fifth board of directors, the 22nd meeting of the fifth supervisory board, and the 2024 annual shareholders’ meeting on April 25, 2025, June 11, 2025, and reviewed and approved the proposal on the “Application for Credit Limits and External Guarantee Plan for 2025.” It agreed that the company and its wholly-owned subsidiaries/grandchildren would apply for a comprehensive credit limit not exceeding 3.8 billion yuan from relevant financial institutions, providing guarantee limits for wholly-owned subsidiaries/grandchildren not exceeding 2.6 billion yuan for 2025. For specific details, please refer to the announcement titled “Guangzhou Lushan New Materials Co., Ltd. on the Application for Credit Limits and External Guarantee Plan for 2025” disclosed on April 28, 2025, on the Shanghai Stock Exchange website (www.sse.com.cn) (Announcement No.: 2025-018).

The guarantee situation is as follows:

On March 26, 2026, the company signed a “Maximum Guarantee Contract” with the Jintan Branch of Bank of China Co., Ltd. (hereinafter referred to as Bank of China Jintan Branch), providing a joint liability guarantee for the debt under the main contract signed between Jiangsu Lushan and Bank of China Jintan Branch for 150 million yuan, with a guarantee period of three years. There is no counter-guarantee for the above-mentioned guarantee.

The specific situation is shown in the table below:

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II. Basic Information of the Guaranteed Party

Jiangsu Lushan New Materials Co., Ltd.

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In the most recent year and period, the main financial data of Jiangsu Lushan (individual) is as follows:

Unit: Ten thousand yuan

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Note: The above 2024 financial data has been audited by Lixin Certified Public Accountants (Special General Partnership), and the data for January to September 2025 has not been audited.

III. Main Content of the Guarantee Agreement

“Maximum Guarantee Contract”

Guarantor: Guangzhou Lushan New Materials Co., Ltd.

Creditor: Jintan Branch of Bank of China Co., Ltd.

Debtor: Jiangsu Lushan New Materials Co., Ltd.

1. Guarantee Amount: Fifty million yuan

2. Guarantee Method: Joint liability guarantee

3. Guarantee Period:

The debt guaranteed under this contract is calculated separately for each debt, with the guarantee period for each debt being three years from the expiration date of the performance period of that debt.

During the guarantee period, the creditor has the right to require the guarantor to assume guarantee liability for all or part of the principal debt, whether for multiple debts or single debts, jointly or separately.

4. Guarantee Scope:

On the expiration date of the principal debt determined in Article 2 of this contract, the interest (including interest, compound interest, penalty interest), liquidated damages, compensation for damages, costs of realizing claims (including but not limited to litigation costs, attorney fees, notarization fees, execution costs, etc.), losses caused to the creditor due to the debtor’s default, and all other payable fees, based on the principal of the guaranteed debt, shall also be deemed as guaranteed debts, with the specific amount determined at the time of payment.

5. There is no counter-guarantee for this guarantee.

IV. Necessity and Rationality of the Guarantee

This guarantee is to ensure the normal operation of the subsidiary’s production and operation. Jiangsu Lushan has a stable operating status and good credit status, and possesses strong debt repayment ability, making the guarantee risk controllable. The company’s guarantee for wholly-owned subsidiaries will not harm the interests of the company and all shareholders and will not adversely affect the company’s normal operations and business development. The above guarantee is fair and equitable and complies with relevant policies and regulations and the provisions of the Articles of Association.

V. Board of Directors’ Opinion

The board of directors believes that this guarantee considers the daily operational needs of the company and its subsidiaries, complies with relevant laws and regulations and the provisions of the Articles of Association, and does not harm the interests of the company and its shareholders. The guarantee risk is generally controllable and beneficial to the company’s production and operation and long-term development, and agrees to the projected external guarantee matters for 2025.

VI. Cumulative Number of External Guarantees

As of the date of this announcement, the external guarantee limit approved by the company’s 2024 annual shareholders’ meeting is 2.6 billion yuan, accounting for 166.69% of the company’s most recent audited net assets. All of the company’s guarantees are for wholly-owned subsidiaries/grandchildren, with no overdue external guarantees.

This announcement is hereby made.

Board of Directors of Guangzhou Lushan New Materials Co., Ltd.

March 27, 2026

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