| Business | Phone |
| C & H Shop 8650 County Road 858, Mckinney 75071 | (972) 562-3382 |
| Richardson Logic Control Inc 2596 Cr 168, Mckinney 75071 | (972) 569-9787 |
| Applogix Development Inc 2851 Craig Dr, Mckinney 75070 | (972) 547-5580 |
| Figtree Technologies 430 S State Highway 5, Mckinney 75069 | (972) 547-6567 |
| Integrated Technologies 211 E Louisiana St, Mckinney 75069 | (972) 838-1304 |