Chenggong Univerfield ni ilu dongying Daqing aaye aaye gbooro Guilhou Baota Petrochemical Ojò Ejò Petrochina dongying petrochemical Co. LTD Shanxi Yancheng China Ikọ Yulin Okun ati Kemika Co. Ltd Apejọ Sidiadi ati ifihan Tianjin CNOOC Weomiking aaye ile Xinjiang Kunnu jiji ile-iṣẹ gaasi adayeba Zhongke (Guangdong) isọdọtun & kemikali Co. Ltd