?- BASF SE
- China Petrochemical Corporation (Sinopec)
- Dow
- Eastman Chemical Company
- Elekeiroz
- Exxon Mobil Corporation
- Formosa Plastic Group
- Grupa Azoty
- INEOS
- LG Chem
- Libra Speciality Chemicals Limited
- Meryer (Shanghai) Chemical Technology Co. Ltd
- Mitsubishi Chemical Corporation
- OXEA GmbH
- Perstorp
- SABIC
- The Andhra Petrochemicals Limited