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

Anhui Investigation Design and Research Institute of Water Conservancy and Electric Power

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

China Nonferrous Metals Industry Changsha Investigation and Design Research Institute

construction China Communications Fourth Harbour Engineering Investigation and Design Institute

Design and investigation

Design and Investigation Institute of Machinery Industry

East China Hydroelectric Power Investigation and Design Institute

geological investigation and design

group-type investigation and design enterprise

Hubei Investigation and Design Institute of Hydropower and Water Resources

Hydropower Investigation and Design Enterprise

Inner Mongolia Forestry Investigation and Design

Institute of Investigation and Design in Beijing

Institute of Water Resources and Electric Power Investigation and Design

Investigation and Design Enterprises

investigation and design industry

Investigation and Design Institute for Chinese Railway Bridge

Investigation and Design Research Institute of Water Resources and Hydropower