| Business | Phone |
| Vibration Management Corp 3532 E Tc Jester Blvd A, Houston 77018 | (713) 263-8181 |
| Thermo Electron Corp 9303 W Sam Houston Pkwy S, Houston 77099 | (713) 272-0404 |
| Mobile Heat Po Box 1527, Houston 77251 | (281) 488-4170 |
| Technology & Calibration 4120 Siegel St, Houston 77009 | (713) 692-1600 |
| Petron Industries Inc 1187 Brittmoore Rd, Houston 77043 | (713) 693-8700 |
| Powertrol Inc 9001 Airport Blvd 501, Houston 77061 | (713) 641-2001 |
| Precision Aviation Inc 8124 Lockheed Ave, Houston 77061 | (713) 644-7383 |
| Sercel Inc 17200 Park Row, Houston 77084 | (281) 492-6688 |