• BASF SE
• Evonik Industries AG (RAG-Stiftung)
• Exxon Mobil Corporation
• Sumitomo Chemical Co. Ltd.
• Global Bioenergies
• Weifang Binhai Petro-Chem Co. Ltd (Tiande Chemical Holdings Co. LTD)
• Honeywell International Inc.
• LyondellBasell Industries Holdings B.V.
• Linde PLC
• China Petrochemical Corporation (Sinopec Group)