| Business | Phone |
| Westinghouse Security Sys Plano 75023 | (972) 517-5107 |
| Divine Productions Plano 75023 | (972) 527-9516 |
| Advanced Lighting Svc 1200 Placid Ave 600, Plano 75074 | (214) 547-9669 |
| Aspect Technology & Equipment 811 E Plano Pkwy 110, Plano 75074 | (972) 840-0867 |
| Despatch Industries Plano 75074 | (972) 881-9093 |
| E4 Security Systems Llc 2201 E President Geo Bush 102, Plano 75074 | (972) 423-4242 |
| Hpl Technologies Inc 2600 Technology Dr 700, Plano 75074 | (972) 379-2700 |
| Jds Test Equipment 1507 Capital Ave, Plano 75074 | (972) 424-5423 |
| Qual-Tec Solutions 6901 K Ave, Plano 75074 | (972) 424-0900 |
| Rayburn Power Conversion 1004 18th Pl, Plano 75074 | (972) 422-1165 |
| S V Probe 811 E Plano Pkwy, Plano 75074 | (972) 881-8523 |
| A Ab Control Inc 17430 Campbell Rd, Plano 75075 | (972) 612-6266 |
| American Meter Co 1721 W Plano Pkwy, Plano 75075 | (972) 422-2505 |
| Spy Centre 2301 N Central Expy, Plano 75075 | (972) 423-8868 |
| Rsa Security Inc 2805 Dallas Pkwy, Plano 75093 | (469) 241-2420 |