ASAHI KASEI CORP.
ASHLAND INC.
BASF
CELANESE
COVESTRO AG
CYTEC INDUSTRIES INC.
DSM
DUPONT DE NEMOURS AND CO.
EMS GRIVORY
EPIC RESINS
HENKEL AG
HUNTSMAN INTERNATIONAL LLC
INTERPLASTIC CORP.
Kingfa Science And Technology Co. Ltd.
LANXESS AG
Mitsubishi Engineering-Plastics Corp.
POLYPLASTICS
SABIC INNOVATIVE PLASTICS
SOLVAY SPECIALTY POLYMERS
SUMITOMO BAKELITE
TORAY PLASTICS
VICTREX PLC