AkzoNobel; BASF SE; Borealis; Chevron Phillips Chemical Company LLC; China Petrochemical Corporation; China Petroleum & Chemical Corporation; Clariant; Dow Chemical; Equistar Chemicals; Exxon Mobil Corporation; Huntsman Corporation; INEOS; LG Chem; Lonza Group; LyondellBasell Industries N.V.; Mitsubishi Chemical; Mitsui Chemicals; National Iranian Petrochemical; Nova Chemicals; Royal Dutch Shell Plc; Sasol; Saudi Basic Industries Corporation (SABIC); Showa Denko; Sinopec Shanghai Petrochemical; The National Petrochemical Company; Tosoh; Total S.A.