Chenggong Oilfield in Dongying City Daqing Oil Field Refinery Guizhou Baota Petrochemical Tank Zone Petrochina Dongying Petrochemical Co. Ltd Shanxi Yanchang China Coal Yulin Energy and Chemical Co. Ltd Sidalia verzamelen en tentoonstelling Tianjin CnooC Weiming petrochemische site Xinjiang Kunlun Tianze Natural Gas Company Zhongke (Guangdong) Refining & Chemical Co. Ltd