- ACP Composites
- Axiom Materials
- Composite Holding Company
- Composite Resources
- Cytec Industries Inc.
- Gurit Holding AG
- Hexcel Corporation
- Isola Group
- Lewcott Corporation
- Lingol Corporation
- Mitsubishi Chemical Carbon Fiber and Composites
- NACCO Aerospace
- Park Electrochemical Corp.
- Renegade Materials Corporation
- Royal Tencate Cate NV
- SGL Carbon SE
- Teijin Limited
- Toray Industries Inc.
- Ventec USA
- Yokohama Aerospace America Inc.
- Zoltek Companies
- Zyvex Technologies