- Arkema Group
- BASF SE
- Braskem
- Chevron Phillips Chemical Company
- China National Petroleum Corporation
- China Petrochemical Corporation
- Daelim
- Dow
- Exxon Mobil Corporation
- Formosa Plastics Corporation
- Japan Polypropylene Corporation
- LG Chem Ltd
- LyondellBasell Industries Holdings BV?
- Mitsubishi Chemical Holdings Corporation
- Mitsui Chemicals Incorporated
- Nova Chemicals Corporation
- PetroChina Company Limited
- Reliance Industries Limited
- SABIC (Saudi Basic Industries Corporation)
- Sasol Ltd
- Tosoh Corporation