1, Sinochem Geotechnical Group Co., Ltd., founded on 200 1, is the first listed company in geotechnical engineering industry in China. The company has developed into an enterprise group, covering engineering services, general aviation, cultural tourism, investment and other fields.
2. Zhongyan Dida Technology Co., Ltd. Brief history of the company: Beijing Zhongyan Dida Technology Co., Ltd., referred to as "Zhongyan Dida", is a geotechnical technology company with technological innovation as its core competitiveness.