Beijing Building Material Geotechnical Engineering Company
Beijing Yanshan Petrochemical Company
Hi-tech Wealth Company Beijing
Hydrochina Beijing Engineering Corporation
Western Hills of Beijing Beijing
Road Bridge Company Beijing
Acrylic Fiber Chemical Plant Fushun Petrochemical Company
Acrylic Fibres plant of daqing petrochemical company
Dagang Petrochemical Company
Dalian Petrochemical Company
Daqing Petrochemical Company
Daqing Petrochemical Engineering Co
Jilin Petrochemical Company
Jinling Petrochemical Company Refinery
Jinzhou Petrochemical Company
Karamay Petrochemical Company
Lanzhou Petrochemical Company
Luoyang Petrochemical Engineering CO