Group 1 - The company Zhonghua Rock and Soil (SZ 002542) held its 23rd temporary board meeting on December 12, 2025, to discuss various proposals including the revision and abolition of certain systems [1] - For the first half of 2025, the company's revenue composition was as follows: foundation treatment accounted for 44.83%, municipal engineering 29.98%, airport engineering 18.72%, others 5.62%, and equipment leasing and sales 0.85% [1] - As of the report date, Zhonghua Rock and Soil had a market capitalization of 6.1 billion yuan [1]

Group 1 - The revenue composition of Zhonghua Geotechnical for the year 2024 is as follows: foundation treatment accounts for 45.1%, airport engineering for 28.13%, municipal engineering for 23.56%, other services for 2.96%, and equipment leasing and sales for 0.24% [1] Group 2 - Zhonghua Geotechnical announced the resignation of its board secretary, Ms. Luo Xiaofeng, due to reaching the legal retirement age. After her resignation, she will not hold any position in the company or its directly or indirectly held companies [3]