Jiangmen Team of Investigation and Surveying

Research Institute of Geotechnical Investigation and Surveying and Mapping

Academy of Investigation and Design of Water Resources and Electric Power in Shaanxi Province Xi’an

Advance of investigation and research

Bangbu Design and Research Institute of Geotechnical Investigation and Surveying

Bengbu Design and Research Institute of Geotechnical Investigation and Surveying

Bengbu Institute of Geotechnical Investigation and Surveying

Bengbu Investigation and Surveying Research Institute

Branch Institute of investigation and design of water conservancy and hydropower in Anhui

Chengdu Central Research Institute of Investigation of China Metallurgical Construction Group

China Insititute of Geotechnical Investigation and Surveying

China Institute of Geotechnical Investigation and Surveying

collection and investigation of icing data

Fuzhou Institute of Geotechnical Investigation and Surveying

Fuzhou Investigation and Surveying Institute

Geotechnical investingation and surveying

Hangzhou Institute of Investigation and Designation

Harbin Geotechnical Investigation and Surveying Institute

Harbin Institute of Geotechnical Investigation and Surveying