| Business | Phone |
| Abbott Drafting & Design 172 King St E #303, Oshawa L1H 1B7 | (905) 725-6001 |
| Trisun Design Inc 1333 Boundary Rd, Oshawa L1J 6Z7 | (905) 723-7336 |
| Central Drafting 1277 Wilson Rd N, Oshawa L1K 2B8 | (905) 728-4848 |
| Cornerstone Drafting & Design 411 Bond St E, Oshawa L1G 1B6 | (905) 433-4621 |