| Business | Phone |
| Fiber Optics Svc 7924 Highway 6 N, Houston 77095 | (281) 345-6662 |
| Inrock 6000 Brittmoore Rd, Houston 77041 | (713) 690-5600 |
| North American Controls 11602 Aerospace Ave 100, Houston 77034 | (281) 481-0022 |
| North American Controls Corp 11602 Boone, Houston 77062 | (281) 481-3073 |