- BASF SE
- Chevron Phillips
- China Petroleum & Chemical Corporation
- Covestro AG
- CPC Corporation
- Exxon Mobil Corporation
- Formosa Plastics
- Lyondellbasell Industries NV
- Nova Chemicals
- Royal Dutch Shell PLC
- Sherwin-Williams
- Total SA
- SK Innovation Co. Ltd
- Valero
- Braskem SA
- Mitsubishi Chemical Corporation