Sinopec corporation, Lyondellbasell industries holdings n.v., Exxonmobil chemical, Petrochina company limited, Saudi arabia basic industries corporation, The dow chemical company, Braskem s.a., Total s.a., Arkema s.a., Borealis ag, Ineos group ag, Abu dhabi polymers company ltd. (borouge), Chevron phillips chemical company llc, Eni s.p.a., Formosa plastics corporation, Polyone corporation, Sasol ltd., Tosoh corporation, Reliance industries limited (ril), Repsol