FILE PHOTO: China National Petroleum Corporation (CNPC)’s Dalian Petrochemical Corp refinery is seen in Dalian, Liaoning province, China January 22, 2019. Picture taken January 22, 2019. REUTERS/Stringer
FILE PHOTO: China National Petroleum Corporation (CNPC)’s Dalian Petrochemical Corp refinery is seen in Dalian, Liaoning province, China January 22, 2019. Picture taken January 22, 2019. REUTERS/Stringer