| Business | Phone |
| Amalfi Glass Inc 572 Millway Ave, Concord L4K 3V3 | (905) 660-0383 |
| Integral Seal Mfg Inc 2 Bradwick Dr, Concord L4K 2T3 | (905) 669-7611 |
| Laserseal Insulating Glass Ltd 30 Corstate Ave #2, Concord L4K 4X2 | (905) 761-1717 |
| Old Castle Glass 2195 Langstaff Rd, Concord L4K 2B2 | (416) 665-1767 |
| Sundor Glass Inc 193 Jardin Dr, Concord L4K 1X5 | (905) 738-3836 |
| Surlite Glass Ltd 150 Buttermill Ave, Concord L4K 3X6 | (905) 660-5550 |