- BASF SE
- Braskem SA
- China Petroleum & Chemical Corporation (Sinopec)
- Dow
- Evonik Industries AG
- Exxonmobil Chemical Company
- Formosa Plastics Group
- Ineos Group AG
- JSR Corporation
- Lanxess AG
- LG Chem Limited
- Lotte Chemical Titan Holding Berhad
- Lyondellbasell Industries NV
- Reliance Industries Limited
- Repsol SA
- Royal Dutch Shell PLC
- Saudi Basic Industries Corporation (SABIC)
- TPC GROUP