?- Borealis AG
- Domo Chemicals
- Exxon Mobil Corporation
- INEOS
- JJ Plastalloy
- LG Chem.
- LyondellBasell Industries Holdings B.V.
- Mitsubishi Chemical Corporation.
- MITSUI CHEMICALS AMERICA Inc.
- PolyPacific
- Repsol
- RTP Company
- SABIC
- Sumitomo Chemical Co. Ltd.
- The Plastics Group of America
- Total