1. 3M Company
2. AGC Inc.
3. Cardinal Glass Industries Inc.
4. Central Glass Co. Ltd.
5. Compagnie de Saint-Gobain S.A.
6. Glaston Corporation
7. Guardian Industries by Koch Industries Inc.
8. H.B. Fuller Company
9. Henkel AG & Co. KGaA
10. Internorm International GmbH
11. Ittihad Insulating Glass
12. JE Berkowitz
13. Knauf Insulation
14. Nippon Sheet Glass Co. Ltd.
15. Owens Corning
16. OYADE Sealant
17. PPG Industries Inc.
18. Qingdao Migo Glass Co.Ltd.
19. Scheuten Glas Nederland BV
20. Shenzhen Jimy Glass Co. Ltd.
21. Sika AG
22. Sipla Solutions
23. Strathclyde Insulating Glass Ltd.
24. Viracon Inc. by Apogee Enterprises Inc.
25. Vitro
S.A.B. de C.V.