1. 3A Composites GmbH
2. AGC Inc.
3. Alcoa Corporation
4. Avient Corporation
5. Boral Limited
6. Compagnie de Saint-Gobain S.A.
7. Cornerstone Building Brands Inc.
8. CRH PLC
9. CSR Limited
10. Etex NV
11. Evonik Industries AG
12. Fletcher Building Limited
13. James Hardie Australia Pty Ltd.
14. Kronoplus Limited
15. Toray Industries Inc.