Huasu Group: The major shareholder, China Chengda, plans to reduce its stake by no more than 0.28%.

Hua Su shares announcement, as of the disclosure date of this reduction plan, China Chengda Engineering Co., Ltd. holds 180 million shares of the company, accounting for 5.01% of the total share capital. Starting from the date of announcement, within three months after 15 full trading days, China Chengda plans to reduce its holdings through centralized bidding trading of no more than 10 million shares, accounting for 0.28% of the company's total share capital. The reduction period is from September 17, 2025 to December 16, 2025, and the source of the shares to be reduced is the shares held before the company's IPO. The reduction plan will be decided based on market conditions and company stock price, and there is uncertainty in the actual amount and price of the reduction.