Dalian Municipal Design and Research Institute of Environmental Science

Dalian Municipal Research and Design Institute of Environmental Science

Taizhou Research and Design Institute of Environment Science

Chaoyang Municipal Environment and Science Research Institute

Tianjin Research and Design Institute of Municipal Engineering

Environmental Science Research and Design Institute of Zhejiang Province

Beijing Municipal Research Institute of Environment Protection Science

Kunming Municipal Institute of Environment Science

Southwest Municipal Engineering Design and Research Institute of China

Taiyuan Institute of Design and Research for Municipal Engineering

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

Anshan Research and Design Institute of Electrostatic Technology

Architectural Design and Research Institute of Guizhou Province

Bangbu Design and Research Institute of Geotechnical Investigation and Surveying

Bengbu Design and Research Institute of Geotechnical Investigation and Surveying

Changsha City Design and Research Institute of Exploration and Surveying

Changsha Design and Research Institute of Exploration and Surveying

Chemical Engineering Design and Research Institute of Xinjiang

Chongqing Design and Research Institute of Steel and Iron