Zhonghua Rock and Soil: Currently operating normally, there are no significant issues that should be disclosed but have not been disclosed.

China Chemical Geotechnical announced on July 21st that the stock trading price had a cumulative deviation of 20% for three consecutive trading days on July 17, July 18, and July 21, 2025. According to the relevant provisions of the Shenzhen Stock Exchange Trading Rules, this constitutes abnormal stock trading volatility. After verification, the company's current operating conditions are normal, and there have been no significant changes in the recent operating conditions and internal and external operating environment, nor are there expected to be. There are no major undisclosed matters that should be disclosed recently. The company, controlling shareholders, and actual controllers do not have any major undisclosed matters related to the company or major matters in the planning stage that should be disclosed.