Announcement on the Termination of Certain Historical Guarantee Quotas and the Adjustment and Addition of Financing Guarantee Quotas for Holding Subsidiaries

Stock Code: 000711 Stock Abbreviation: ST Jinglan Announcement No.: 2026-069

Yintarget New Materials (Harbin) Co., Ltd.

Announcement on the Termination of Certain Historical Guarantee Quotas and the Adjustment and Addition of Financing Guarantee Quotas for Holding Subsidiaries

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1. The guaranteed parties reviewed by this Board of Directors include four holding subsidiaries: Yunnan Yesheng Environmental Resources Technology Co., Ltd. (hereinafter "Yunnan Yesheng"), Yintarget New Materials (Lufeng) Co., Ltd. (hereinafter "Lufeng Yintarget", formerly known as Yintarget Technology (Yunnan) Co., Ltd.), Yintarget New Materials (Gejiu) Co., Ltd. (hereinafter "Gejiu Yintarget", formerly known as Gejiu Xinghua Zinc Industry Co., Ltd.), and Yintarget New Materials Technology (Honghe) Co., Ltd. (hereinafter "Honghe Yintarget"). Following the approval of this adjustment, the projected guarantee quotas for each holding subsidiary are: Yunnan Yesheng 30 million yuan, Lufeng Yintarget 120 million yuan, Honghe Yintarget 30 million yuan, and Gejiu Yintarget 20 million yuan. Among these, the asset-liability ratios of Yunnan Yesheng, Lufeng Yintarget, and Gejiu Yintarget in the most recent period (unaudited) exceed 70%.

2. After the termination of certain historical guarantee quotas and the adjustment and addition of financing guarantee quotas for holding subsidiaries are approved, the total external guarantee quota for Yintarget New Materials (Harbin) Co., Ltd. (hereinafter "the Company" or "the Listed Company") and its holding subsidiaries will be 269 million yuan, accounting for 46.04% of the net assets attributable to shareholders of the listed company as of the most recent audited period (December 31, 2025). As of the disclosure date of this announcement, the balance of external guarantees provided by the Company and its holding subsidiaries is 43.74 million yuan, accounting for 7.49% of the net assets attributable to shareholders of the listed company as of the most recent audited period (December 31, 2025). The Company and its holding subsidiaries do not provide guarantees for entities outside the consolidated financial statements.

3. In accordance with the Rules Governing the Listing of Stocks on the Shenzhen Stock Exchange, the Articles of Association, and other relevant regulations on external guarantees, this guarantee matter is subject to approval by the Company's 2026 Fourth Extraordinary General Meeting of Shareholders after being reviewed and approved by the Board of Directors. Investors are advised to pay full attention to the risks.

I. Overview of Guarantee Situation

On July 22, 2026, the 28th extraordinary meeting of the 11th Board of Directors of the Company was held, and the "Proposal on Terminating Certain Historical Guarantee Quotas and Adjusting and Adding Financing Guarantee Quotas for Holding Subsidiaries" was approved with 7 votes in favor, 0 against, and 0 abstentions.

To optimize the full-process management and control of the Company's external guarantees, coordinate and match the production, operation, project construction, and working capital financing needs of each holding subsidiary, and combine the implementation of historical guarantee businesses, existing financing, and future capital planning of each holding subsidiary, the Company intends to carry out unified clearing, termination, adjustment, and new verification work for the guarantee quotas of its holding subsidiaries. The specific matters are as follows:

(I) Clearing of Historical Guarantee Quotas and Adjustment of Existing Quotas for Holding Subsidiary Yunnan Yesheng

1. On December 15, 2024, the Company's Board of Directors reviewed and approved, and on December 17, 2024, announced a guarantee quota of 40 million yuan for Yunnan Yesheng to the Mouding County Rural Credit Cooperative Union business department, with a guarantee period of 36 months. After the guarantee quota was approved, the relevant financing business was not ultimately carried out by the Company, and the Company now decides to terminate this guarantee quota in full and will no longer bear guarantee obligations for this credit line.