Chenggong Oilfield fil-Belt Dongying Raffinerija tal-kamp taż-żejt tad-daqing Guizhou Baota Żona tat-Tank Petrokimika Petrochina Dongying Petrochemical Co. Ltd Shanxi Yanchang China Coal Yulin Energy and Chemical Co. Ltd Sidalia Gathering and Wirja Tianjin Cnooc Weiming Sit Petrokimiku Xinjiang Kunlun Tianze Kumpanija tal-Gass Naturali Zhongke (Guangdong) Refining & Chemical Co. Ltd