1. 3M Company
2. Anco Products Inc
3. Armacell International S.A.
4. Aspen Aerogels Inc
5. BASF SE
6. BNZ Materials Inc.
7. Cabot Corporation
8. Cellofoam North America Inc.
9. ContiTech AG by Continental AG
10. DBW Advanced Fiber Technologies GmbH
11. Evonik Industries AG
12. Flumroc AG
13. G+H Group
14. GAF Materials LLC
15. Glava A/S
16. Huntsman Corporation
17. Insulcon BV
18. Johns Manville by Berkshire Hathaway Company
19. Kingspan Group PLC
20. Knauf Insulation
21. Morgan Advanced Materials
22. Paroc Group Oy by Owens Corning
23. Rath GmbH
24. ROCKWOOL A/S
25. TechnoNICOL Corporation
26. Unifrax I LLC
27. United States Mineral Products Company