1. 3M Company
2. AGC Inc.
3. Air Products and Chemicals Inc.
4. Cardinal Glass Industries Inc.
5. Central Glass Co. Ltd.
6. Compagnie de Saint-Gobain
7. Downey Glass
8. Dymax Corporation
9. ECO GLASS Windows
Doors & More
10. Glaston Corporation
11. Guardian Industries by Koch Industries Inc.
12. H.B. Fuller Company
13. Heatseal Double Glazing
14. ICESUN Vauum Glass LTD.
15. Internorm International GmbH,
16. Ittihad Insulating Glass Company
17. Jeld-Wen Holding Inc.
18. LUOYANG LANDVAC VIG SCIENCE & TECHNOLOGY CO. LTD
19. Masco Corporation
20. Nippon Sheet Glass Co. Ltd.
21. Oyade Sealant Industry Co. Ltd.
22. Panasonic Holdings Corporation
23. QINGDAO MIGO GLASS CO. LTD
24. Qingdao Morn Building Materials Co.Ltd
25. Royal Tough Glass Works
26. sedak GmbH & Co. KG
27. Shandong Haanglas Co.Ltd
28. Sika AG
29. Viracon by Apogee Enterprises Inc.
30. Vitro
S.A.B.