Stock Code: 000688 Stock Abbreviation: Guocheng Mining Announcement Number: 2026-048 Guocheng Mining Co., Ltd. Announcement Regarding Shareholding Change by Controlling Shareholder and Concerted Parties Exceeding 1% and Multiples of 5% Guocheng Holdings Group Co., Ltd. and its concerted party, Gansu Jianxin Industrial Group Co., Ltd., guarantee that the information provided to this company is true, accurate, and complete, and contains no false records, misleading statements, or significant omissions. This company and all members of the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or significant omissions. Special Note:
- This equity change is due to the reduction of shares by the company's controlling shareholder and its concerted party, and does not trigger a mandatory offer.
- This equity change is mainly due to Jianxin Group's cumulative reduction of 11,701,739 shares of Guocheng Mining through centralized bidding and block trades, causing the combined shareholding ratio of the company's controlling shareholder Guocheng Group and its concerted party Jianxin Group to decrease from 65.99% to 65.00%. The equity change has triggered multiples of 1% and 5%.
- This equity change will not result in a change of the company's controlling shareholder and actual controller, nor will it affect the company's governance structure and continued operation. I. Overview of the Equity Change Guocheng Mining Co., Ltd. (hereinafter referred to as "the Company" or "Guocheng Mining") published the "Pre-disclosure Announcement on Share Reduction by Shareholders" (Announcement Number: 2026-031) on the designated information disclosure media of the Company on April 25, 2026. Gansu Jianxin Industrial Group Co., Ltd. (hereinafter referred to as "Jianxin Group"), a shareholder holding 466,139,241 shares of the Company (accounting for 39.33% of the Company's total share capital), plans to reduce its shares in the Company by no more than 25,000,000 shares (not exceeding 2.11% of the Company's total share capital) through centralized bidding and block trades within three months from the 15th trading day after the disclosure of this announcement. If block trades are used for reduction, the total number of shares reduced within any consecutive 90 natural days shall not exceed 2% of the Company's shares; if centralized bidding is used for reduction, the total number of shares reduce