?- Airborne
- Bally Ribbon Mills
- Belotti SpA
- DOPAG India Pvt. Ltd.
- DuPont de Nemours Inc.
- Hexcel Corporation
- Materion Corporation
- Mitsubishi Chemical Carbon Fiber and Composites Inc.
- SGL Carbon SE
- Solvay SA
- Teijin Carbon Europe GmbH
- Toray Industries Inc.