| Business | Phone |
| Miller Electric 336 Primrose Lane, Newmarket L3Y 5Z2 | (905) 895-1438 |
| Mr Electric 1251 Gorham St #12, Newmarket L3Y 7V1 | (905) 773-0857 |
| Newmarket Electric Ltd 780 Botany Hill Cres, Newmarket L3Y 3A8 | (905) 898-6478 |
| Oban Electric Ltd 956 Lockwood Cir, Newmarket L3X 1M1 | (905) 709-9870 |
| Penmar Automation Inc 355 Harry Walker Pky N, Newmarket L3Y 7B3 | (905) 836-8103 |
| Performance Electrical Contr Rr 7, Newmarket L3Y 4X1 | (905) 895-6779 |
| Tech 3 110 Pony Dr #7, Newmarket L3Y 7B6 | (905) 953-5424 |
| Tech 3 16715 Yonge St, Newmarket L3X 1X4 | (905) 853-6710 |
| Yorkwide Electric Inc 4145 St Johns Sideroad, Newmarket L3Y 4W1 | (905) 640-7553 |
| Dan Trautman Electric 120 Harry Walker Pky N, Newmarket L3Y 7B2 | (905) 895-8432 |
| Enterprise Technical Svc Ltd 1180 Kerrisdale Blvd #5, Newmarket L3Y 7V1 | (905) 868-9981 |