China Hi-tech Group: repurchased 0.05% of the company's shares for a total transaction amount of 1.913 million yuan.

Announcement from Zhongrui Group: On March 16, 2026, the company repurchased company shares for the first time through a special securities account for share repurchases in a centralized bidding trading manner. The number of repurchased shares is 550,000, accounting for 0.05% of the company's current total share capital. The highest repurchase price was RMB 3.49 per share, and the lowest repurchase price was RMB 3.47 per share, with a total transaction amount of RMB 1.913 million.