- A.Schulman Inc.
- BASF SE
- Celanese Corporation
- Chang Chun Plastics Co. Ltd
- China National Bluestar (Group) Co. Ltd
- Clariant
- DuPont
- Evonik Industries AG
- Lanxess
- Mitsubishi Engineering Plastics Corporation
- Nan Ya Plastics
- Polymer Technology and Services LLC
- Polyone Corporation
- Polyplastics Co. Ltd
- Royal DSM NV
- RTP Company
- SABIC
- Sipchem
- Toray Industries Inc.