• Mitsubishi Chemical Holdings Corporation
• Arkema S.A.
• BASF SE
• The Dow Chemical Company
• Evonik Industries AG (RAG-Stiftung)
• LG Chem Ltd. (LG Corporation)
• Formosa Plastics Group
• Sasol Limited
• Nippon Shokubai Co. Ltd.
• Merck KGaA