| Business | Phone |
| Hale Transformer Co 5536 Petty St, Houston 77007 | (713) 864-7244 |
| Turbo Power 5858 Waltrip St, Houston 77087 | (281) 585-5635 |
| Omega Aviation Svc Inc 8242 Travelair St, Houston 77061 | (713) 649-6878 |
| Smarte Carte Inc 7900 Airport Blvd, Houston 77061 | (713) 645-9359 |
| Transformer Service Co 20819 Essman Ln 8, Houston 77073 | (281) 443-0601 |