Announcement on the Release of Pledge on Shares Held by Controlling Shareholder

Securities Code: 002542 Securities Abbreviation: *ST Zhongyan Announcement No.: 2026-052 Zhonghua Rockfall Group Co., Ltd. Announcement on the Release of Pledge on Shares Held by Controlling Shareholder The Company and all members of the Board of Directors guarantee the truthfulness, accuracy, and completeness of the information disclosed herein, and that there are no false records, misleading statements, or major omissions. Zhonghua Rockfall Group Co., Ltd. (hereinafter referred to as the "Company") received a "Letter of Notification on the Release of Pledge of Shares of Zhonghua Rockfall Group Co., Ltd." from its controlling shareholder and actual controller, Chengdu Xingcheng Investment Group Co., Ltd. (hereinafter referred to as "Chengdu Xingcheng Group") today. It is learned that Chengdu Xingcheng Group has completed the procedures for releasing the pledge of 94,398,709 shares of the Company pledged to the Chengdu Branch of China Merchants Bank Co., Ltd. The specific matters are as follows: I. Basic Situation of This Share Pledge Release | Shareholder Name or First