FILE PHOTO: A man stands next to a logo of Sinopec, or China Petroleum and Chemical Corporation, at an expo on rubber technology in Shanghai, China September 19, 2018. REUTERS/Stringer/File Photo
FILE PHOTO: A man stands next to a logo of Sinopec, or China Petroleum and Chemical Corporation, at an expo on rubber technology in Shanghai, China September 19, 2018. REUTERS/Stringer/File Photo