- Borealis AG
- Braskem
- China National Petroleum Corporation (PetroChina)
- China Petrochemical Corporation (Sinopec)
- Exxon Mobil Corporation
- Formosa Plastics Group
- Ineos
- Lotte Chemical Corporation
- LyondellBasell Industries Holdings BV
- Mitsubishi Chemical Corporation
- Mitsui Chemicals Inc.
- Reliance Industries Limited
- SABIC
- Sibur International GmbH
- Sumitomo Chemical Co. Ltd
- Total