| Business | Phone |
| Spectra Test Systems 11000 Stancliff Rd, Houston 77099 | (281) 933-8388 |
| Professionalized Products 10905 Brooklet Dr, Houston 77099 | (281) 933-9427 |
| Protoline Inc 10650 Stancliff Rd, Houston 77099 | (281) 561-0505 |
| V J Electronics Assemblies 10899 Kinghurst St 225, Houston 77099 | (281) 498-0111 |
| Texas Cad Inc Po Box 720174, Houston 77272 | (281) 530-2364 |