?- BASF SE
- Braskem
- Chevron Phillips Chemical Company LLC
- China Petroleum & Chemical Corporation
- Eastman Chemical Company
- Exxon Mobil Corporation
- Flint Hills Resources
- Hengyi Industries Sdn Bhd
- INEOS
- LG Chem
- LyondellBasell Industries Holdings BV
- Marathon Petroleum Company
- Maruzen Petrochemical
- Mitsubishi Chemical Corporation
- Reliance Industries Limited
- Shell PLC
- SABIC
- SIBUR