| Business | Phone |
| Hardinge Brothers Ltd 3375 14th Ave, Markham L3R 0H2 | (905) 470-8844 |
| Neotel Inc 170 Esna Park Dr, Markham L3R 1E3 | (905) 940-9888 |
| Quark Security Systems Inc 70 Gibson Dr #11, Markham L3R 4C2 | (905) 940-2920 |
| Strategic Vista Corp 300 Alden Rd, Markham L3R 4C1 | (905) 946-8589 |
| Systems Integration 315 Steelcase Rd E, Markham L3R 2R5 | (905) 479-9919 |
| Tasun Systems Inc 115 Apple Creek Blvd, Markham L3R 6C9 | (905) 474-9314 |
| Tonnic Built-In Systems Ltd 435 Steelcase Rd E, Markham L3R 2M2 | (416) 299-7847 |
| Tonnic Built-In Systems Ltd 4350 Steeles Ave E, Markham L3R 9V4 | (905) 513-8988 |
| Verif Eye Inc 70 Esna Park Dr, Markham L3R 6E7 | (905) 948-0015 |
| Vidsecure Inc 2651 John St, Markham L3R 2W5 | (905) 415-4775 |
| Virtual Dog Inc 15 Gormley Industrial Ave, Markham | (905) 888-4746 |
| Checkpoint Meto Canada 710 Cochrane Dr, Markham L3R 5N7 | (905) 948-0999 |
| Dobermann Security Products 90 Nolan Crt #36, Markham L3R 4L9 | (905) 477-9022 |