1. Agnora
2. Asahi India Glass Ltd.
3. Bendheim Architectural Glass
4. Central Glass Co. Ltd.
5. Compagnie de Saint-Gobain S.A.
6. Corning Inc.
7. Cristacurva
8. Euroglass GmbH
9. Fuyao Group
10. G.James
11. Golden Curtain Wall Group Co. Ltd.
12. Guardian Industries
13. Hainan Development Holdings Nanhai Co. Ltd.
14. Nippon Sheet Glass Co. Ltd.
15. Oldcastle Building Envelope
16. PPG Industries Inc.
17. Schott AG
18. Sedak GmbH
19. Tecno spa
20. Trulite Glass & Aluminum Solution
21. Viracon Inc.
22. Vitro
S.A.B. de C.V.
23. Vitrum Glass Group
24. Xinyi Glass Holdings Limited
25. Ykk AP Inc.