1. Abrisa Technologies
2. AGC Group
3. Arnold Central Management Company Ltd.
4. Asahi India Glass Limited
5. Bendheim
6. Central Glass Co. Ltd.
7. Corning Incorporated
8. CSG Holding Co. Ltd.
9. Kaphs
10. Metro Performance Glass
11. Morley Glass & Glazing Ltd.
12. Nippon Sheet Glass Co. Ltd.
13. PPG Industries Inc.
14. Saint-Gobain Group
15. SCHOTT AG by Carl-Zeiss-Stiftung
16. Sedak GmbH & Co. Kg
17. Vitro Architectural Glass