Hainan Natural Rubber Industry Group Co., Ltd. Announcement on Receipt of the Decision Letter from Hainan Securities Regulatory Bureau Ordering Correction

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Stock code: 601118 Stock abbreviation: Hainan Rubber Announcement No.: 2026-012

Hainan Natural Rubber Industry Group Co., Ltd.

Announcement on the receipt of a decision letter ordering rectification issued by the Hainan CSRC

The board of directors and all directors of the Company hereby guarantee that this announcement contains no false records, misleading statements, or material omissions, and assume legal responsibility for the truthfulness, accuracy, and completeness of the content.

Hainan Natural Rubber Industry Group Co., Ltd. (hereinafter referred to as the “Company”) received on March 27, 2026 a decision issued by the Hainan Regulatory Bureau of the China Securities Regulatory Commission: “Decision on Taking Rectification Measures against Hainan Natural Rubber Industry Group Co., Ltd.” (No.〔2026〕11, hereinafter referred to as the “Decision Letter”). The relevant matters are hereby announced as follows:

I. Contents of the Decision Letter

“Hainan Natural Rubber Industry Group Co., Ltd.:

In the course of an on-site inspection, my office found that some of the trading business carried out by your company has no commercial substance, resulting in inaccurate disclosure of financial information such as operating revenue and costs in your company’s annual reports for 2023 and 2024.

Your company’s above conduct violates Article 3, Paragraph 1 of the “Measures for the Administration of Information Disclosure of Listed Companies” (CSRC Order No. 182).

Pursuant to Article 52 of the “Measures for the Administration of Information Disclosure of Listed Companies” (CSRC Order No. 182), my office has decided to take an administrative regulatory measure requiring rectification against your company, and to record the relevant violations in the database of corporate integrity in the capital market. Your company shall strengthen its study of relevant laws and regulations, conduct a self-audit regarding the authenticity and accuracy of relevant annual financial data, and submit a written rectification report to my office within 30 days from the date of receipt of this Decision Letter. My office will take further measures in accordance with subsequent inspection results.

If you are dissatisfied with these regulatory measures, you may file an application for administrative reconsideration with the China Securities Regulatory Commission within 60 days from the date of receipt of this Decision Letter, or file a lawsuit in a people’s court with jurisdiction within 6 months from the date of receipt of this Decision Letter. During the period of reconsideration and litigation, the above regulatory measures shall not be suspended.”

II. Company Explanation

The Company’s directors and senior management attach great importance to the issues pointed out in the Decision Letter. They will strictly carry out self-audits in accordance with regulatory requirements, correct the issues found earnestly, and submit the written rectification report within the prescribed period. At the same time, the Company will further strengthen its study of relevant laws and regulations, continuously improve its standardized operations, enhance the internal control system, effectively safeguard the interests of the Company and its shareholders, and promote the healthy, stable, and sustainable development of the Company.

This administrative regulatory measure will not affect the Company’s normal production and business operations. The Company will strictly fulfill its information disclosure obligations in a timely manner in accordance with relevant provisions. Investors are kindly requested to pay attention to investment risks.

Announcement is hereby given.

Board of Directors of Hainan Natural Rubber Industry Group Co., Ltd.

March 28, 2026

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