Central and Southern China Municipal Engineering Design Research Institute

China Nonferrous Metals Industry Changsha Investigation and Design Research Institute

China Research Institute of Radio Wave Propagation

China Research Institute of Radiowave Propagation

China Research Institute of Radio-wave Propagation

China Research Institute of Radiowave Propagation Qingdao Branch

China Research Institute of Radiowqve Propagation

South China Research Institute of Tropical Crops Processing

East-China Design Institute of Forestry Inventory Planning

East China Architectural Design Research Institute Co.

Zhejiang Urban and Rural Planning Design Research Institute

Beijing Urban Construction Exploration Surveying Design Research Institute Co.Ltd.

Plan Design Institute

Anhui Province Bengbu Surveys Design Research Institute

Beijing Geo-engineering Design Research Institute

Chengdu Programme and Design Research Institute

Design Research Institute of Changsha

Gansu Non-ferrous Engineering Exploration and Design Research Institute

HangZhou Design-research Institute of Exploration and Surveying