Sinopec employees work on pipelines connecting a Sinopec natural gas facility and Binhai transmission station of China National Petroleum Corporation's (CNPC) Dagang oilfield, ahead of the winter heating season in Tianjin, China October 22, 2018. Picture taken October 22, 2018. REUTERS/Stringer ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. - RC15837C5B70