| Business | Phone |
| J T Electronics 740 F Ave 302, Plano 75074 | (972) 578-9083 |
| Planotronics 4116 Hampshire St, Plano 75093 | (972) 867-5906 |
| Yageo Corp 2321 Coit Rd C, Plano 75075 | (972) 599-0099 |
| Sheffield Electronics Industry 3401 Sheffield Cir, Plano 75075 | (972) 596-4900 |
| Sigma Four 811 E Plano Pkwy, Plano 75074 | (972) 423-6474 |
| S V Tronic 3465 Technology Dr, Plano 75074 | (214) 440-1234 |
| Flextronics International 600 Shiloh Rd, Plano 75074 | (469) 229-1000 |