?- AGC Inc.
- Asahi Kasei Corporation
- Daicel Corporation
- Daikin Industries
Ltd.
- Kuraray Co. Ltd.
- Kureha Corporation
- MCT PET Resin Co Ltd
- Mitsubishi Chemical Corporation
- PBI Advanced Materials Co.Ltd.
- Polyplastics-Evonik Corporation
- Sumitomo Chemical Co. Ltd.
- Techno-UMG Co. Ltd.
- Teijin Limited
- Toray Industries Inc.
- UBE Corporation