Chenggong Oilfield hauv Dongying City DAQUING ROJ FOOGLECHERY Guizhou Baota petrochemical tank rau PetroChina Dongying Petrochemical Co. Ltd Shanxi Yanchang Tuam Tshoj Coalfin Zog thiab Tshuaj lom neeg Co. Ltd Sidalia sib sau thiab nthuav qhia Tianjin croc Weiming petrochemical site Xinjiang Kunlun Tianze cuab tam Zhongke (Guangdong) Refining & Tshuaj Co. Ltd