| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 |
|
glass supplier | 54 |
| 2 |
|
glass supplier | 262 |
| 3 |
|
glass supplier | 354 |
| 4 | A-1 Glass, Inc. | glass supplier | 1 |
| 5 | Admiral Glass | glass supplier | 8 |
| 6 | AFG Glass | glass supplier | 2 |
| 7 | AFG Industries, Ltd. | glass supplier | 0 |
| 8 | Afton Plastics | glass supplier | 0 |
| 9 | AGC Flat Glass Europe SA | glass supplier | 4 |
| 10 | A. Khamees Glass | glass supplier | 1 |
| 11 | All Glass, Inc. | glass supplier | 1 |
| 12 | Apogee Enterprises, Inc. | glass supplier | 0 |
| 13 | Applewood Glass & Mirror | glass supplier | 11 |
| 14 | ARCH Aluminum & Glass Co., Inc. | glass supplier | 1 |
| 15 | Architectural Glass & Aluminum Company, Inc. | glass supplier | 5 |
| 16 | Arcon Flachglas-Veredelung GmbH & Co. Beschichtungstechnik KG | glass supplier | 0 |
| 17 | Asahi Glass Co., Ltd. | glass supplier | 2 |
| 18 | A. S. Rubicon | glass supplier | 1 |
| 19 | Barrie Glass & Mirror Ltd. | glass supplier | 2 |
| 20 | BGT Bischoff Glastechnik AG | glass supplier | 0 |