- Fiberon
- FlexForm Technologies
- GreenCore Composites Inc.
- GreenGran BV
- Jelu-Werk Josef Ehrler GmbH & Co. Kg
- Meshlin Composites Zrt.
- Polyvlies Franz Beyer GmbH & Co. Kg
- Procotex SA Corporation NV
- Tecnaro GmbH
- Trex Company Inc.
- TTS (Tekle Technical Services Inc.)
- UPM Biocomposites
- Weyerhaeuser Company
- Amorim Cork Composites SA
- AZEK Building Products
- Oldcastle APG