| Business | Phone |
| Lamenator Inc 2180 Highway 7, Concord L4K 1W6 | (905) 738-6273 |
| Mirtech International Security 100 Drumlin Cir, Concord L4K 3E5 | (905) 669-1211 |
| National Verification Systems 201 Millway Ave #18, Concord L4K 5K8 | (905) 738-8220 |
| Procan Installations 50 Ritin Lane, Concord L4K 4C9 | (905) 660-5025 |
| Razko International 56 Pennsylvania Ave #2, Concord L4K 3V9 | (905) 660-9882 |
| Emc Security & Build In 116 Viceroy Rd, Concord L4K 2L8 | (905) 760-1144 |