1. Activar Construction Products Group Inc.
2. Acudor Products Inc.
3. Advanced Architectural Stone
4. American Gypsum Company LLC
5. Chiyoda Ute Co. Ltd.
6. Fibrex GFRC
7. Formglas Products Ltd.
8. Formula by Saint-Gobain Group
9. GC Products LLC
10. GRG Technologies
LLC
11. IntexForms Inc.
12. K. Peterson Associates Inc.
13. Knauf Danoline A/S
14. Melton Classics Incorporated
15. National Gypsum Services Company
16. Owens Corning
17. Plasterceil Industries Pte Ltd.
18. RPG Acoustical Systems LLC
19. Spectis Moulders Inc.
20. Stromberg Architectural Products
21. The Williams Brothers Corporation of America
22. Unlimited Designs Inc.
23. UP Ceilings and Walls LLC
24. USG Corporation
25. Yingchuang Building Technique (Shanghai) Co. Ltd.