| Business | Phone |
| Filtronic Solid State 2004 Cannes Dr, Plano 75025 | (972) 527-6631 |
| Ami Semiconductor Inc 2400 Dallas Pkwy # 420, Plano 75093 | (972) 248-7770 |
| Cascade Microtech Inc 1013 15th Pl 164, Plano 75074 | (469) 467-8086 |
| Coastal Instrument Of Texas 624 Krona Dr 100, Plano 75074 | (972) 423-7200 |
| Toppan Photomasks 555 Republic Dr 430, Plano 75074 | (972) 398-0411 |
| L G Siltron 555 Republic Dr 119, Plano 75074 | (972) 665-2093 |
| Maxim Integrated Products 2600 Avenue K, Plano 75074 | (972) 422-9433 |
| Powersmart Inc 6404 International Pkwy, Plano 75093 | (972) 250-6474 |
| Tri Technology Inc 126 Ridgeview Dr, Plano 75094 | (972) 422-2054 |
| Texas Advanced Optoelectronic 1001 Klein Rd 300, Plano 75074 | (972) 673-0759 |
| Reel Ic 500 N Central Expy 565, Plano 75074 | (972) 423-8499 |
| Motorola Semiconductor Prods 500 N Central Expy 175, Plano 75074 | (972) 516-5100 |
| Pmc-Sierra Inc 850 Central Pkwy E 140, Plano 75074 | (972) 423-4135 |
| Atmel Corp 2805 Dallas Pkwy 260, Plano 75093 | (469) 366-3100 |