1. Armacell Group
2. Aspen Aerogels Inc.
3. BASF SE
4. Certainteed by Saint-Gobain S.A.
5. DuPont de Nemours Inc.
6. Halcyon Technologies
7. Huntsman Corporation
8. International Corrosion Services LLC
9. Johns Manville by Berkshire Hathaway Company
10. Kingspan Group
11. Knauf Insulation d.o.o.
12. KORFF ISOLMATIC GmbH
13. KRAMER GmbH
14. Nichias Corporation
15. OJ Insulation
L.P.
16. Owens Corning
17. Refmon Industries
18. Rockwool A/S
19. Sika AG
20. The Dow Chemical Company
21. Thermaflex
22. Thermax Limited
23. Zotefoams PLC