Okuluhlazaizinto zokwakha ezisetshenziswa inkampani zonke zivela ezitshalweni ze-petrochemical ezaziwayo ekhaya nakwamanye amazwe, njengeBorouge, Sabic, SK, LG, Basell, Sinopec, Petrochina njalonjalo.Ezingenabo ubuthi futhi ezihambisana nemvelo, futhi zithembisa ukuthi ngeke zengeze imfucuza egaywe kabusha.Ngemva kokungena efekthri, zonke izinto zokusetshenziswa kufanele ziphumelele uchungechunge lwezivivinyo eziqinile nezisetshenziswa zesayensi ngaphambi kokuthi zifakwe ekukhiqizeni.Ukuqinisekisa izinga eliphezulu nokuhlanzeka komthombo womkhiqizo, beka isisekelo sekhwalithi ephezulu.