| Business | Phone |
| Optik K & R Inc 860 Denison St, Markham L3R 4H1 | (905) 470-0999 |
| Unitech Canada 505 Hood Rd, Markham L3R 5V6 | (905) 947-4493 |
| Vision Optical Supplies 90 Nolan Crt #57, Markham L3R 4L9 | (905) 477-5009 |
| Visualeyz Inc 2800 John St, Markham L3R 0E2 | (905) 475-2828 |