| Business | Phone |
| Micro Interface Design 340 Don Park Rd, Markham L3R 1C5 | (905) 475-8590 |
| Power Group & Assoc 461 Alden Rd, Markham L3R 3L4 | (905) 415-9822 |
| Realtec Corp Canada Inc 570 Alden Rd, Markham L3R 8N5 | (905) 944-9774 |
| First Wave Technology Inc 1271 Denison St #56, Markham L3R 4B5 | (905) 470-2900 |