Geotechnical engineering is a new technical system established in the practice of civil engineering in the 1960s in European and American countries. Geotechnical engineering takes solving rock mass and soil engineering problems including foundation, slope and underground engineering as its research object. Our company has a survey qualification level of professional class A qualification. Its business scope covers housing construction engineering, municipal engineering, urban rail transit engineering, highway engineering and other industries. There are about 100 professional and technical personnel in the survey. We have signed annual collection agreements with Vanke, Biguiyuan, Hengda, Rongchuang, Huaxia Happiness, Xuhui, Hejingtaifu and other large real estate development enterprises, and signed annual collection agreements with Chengdu. A series of government platform companies such as Gaotou, Chengdu Tiantou, Chengdu Xingcheng, Chengdu Transaction and Chengdu Airport Group have reached long-term cooperative relations. We have undertaken and completed nearly 1000 projects such as "Wanke 17 degrees 2300 mu Sunshine Lake Residential Town Project", "Kunming Plate Machinery Factory", "Yinxin Wuzhou Square", "Jinshacheng Phase IV", "Sancha Bajiao Community Project", "Beihu Spring", "Dayi Yunshang Project" and "Mianyang 2948 Project".