| Business | Phone |
| Gerard B De Camp 3453 Hearst Castle Way, Plano 75025 | (972) 491-5474 |
| Kelly Bedford Engineering 712 Shallow Creek Ln, Plano 75025 | (972) 527-5047 |
| Gonzales & Schneeberg Eng 660 N Central Expy 250, Plano 75074 | (972) 516-8855 |
| Gxt Ltd 850 Central Pkwy E 110, Plano 75074 | (469) 385-5163 |
| J O Bowland Equipment Co 3357 Westminster Dr, Plano 75074 | (972) 422-1275 |
| Odegos Technology Inc 4433 Denver Dr, Plano 75093 | (972) 596-5954 |
| Paragon Innovations 2100 10th St 100, Plano 75074 | (972) 265-6000 |
| Tom Green & Co Engineers Plano 75093 | (972) 381-7001 |
| Synergy Engineering 3401 Virginia Dr, Plano 75093 | (972) 489-5393 |
| Radford Engineering Co 1917 Country Club Dr, Plano 75074 | (972) 424-0969 |
| Systems Engineering Intl 2121 E Spring Creek Pkwy, Plano 75074 | (972) 208-5065 |