中岩大地：全资子公司中标中铁二局碧水再生水厂二期场地准备及底泥处置施工项目地基基础工程

Group 1 - The core point of the article is that Zhongyan Dadi has won a construction subcontract for a project with a bid amount of approximately 73.86 million yuan [1] - Zhongyan Dadi's subsidiary, Beijing Zhongyan Dadi Engineering Technology Co., Ltd., is the awarded contractor for the foundation engineering of the second phase of the Bi Shui Reclaimed Water Plant [1] - As of the report date, Zhongyan Dadi has a market capitalization of 3.9 billion yuan [1] Group 2 - For the first half of 2025, Zhongyan Dadi's revenue composition is as follows: geotechnical engineering accounts for 94.16%, product sales for 4.87%, environmental remediation for 0.53%, and others for 0.44% [1]