Chenggong Oilfield i Dongying City Daqing Oil Field Refinery Guizhou Baota petrokemisk tankzone Petrochina Dongying Petrochemical Co. Ltd Shanxi Yanchang China Coal Yulin Energy and Chemical Co. Ltd Sidalia samling og udstilling Tianjin Cnooc Weiming petrokemisk sted Xinjiang Kunlun Tianze Natural Gas Company Zhongke (Guangdong) Refining & Chemical Co. Ltd