| Business | Phone |
| Marine Safe Electronics Ltd 261 Millway Ave #12, Concord L4K 4K9 | (905) 738-3744 |
| Pass & Seymour Canada Inc 448 North Rivermede Rd, Concord L4K 3M9 | (416) 665-8988 |
| Pro-Tech Electronics Canada 750 Millway Ave, Concord L4K 3T7 | (905) 760-2185 |
| Elkon Inc 23 Mccleary Crt, Concord L4K 3R6 | (905) 761-9200 |
| Commercial Switchgear Ltd 8131 Keele St #3, Concord L4K 1Z2 | (905) 669-9270 |
| Cool Innovations Inc 260 Spinnaker Way #8, Concord L4K 4P9 | (905) 760-1992 |
| E D Electronics 164 Buttermill Ave, Concord L4K 3X6 | (905) 761-5993 |
| Trillium Controls Inc 150 Connie Cres #17, Concord L4K 1L9 | (289) 371-0222 |