| Business | Phone |
| Kongsberg Norcontrol Inc 7225 Langtry St, Houston 77040 | (713) 365-9457 |
| Alpha Marine Electric Co 5802 Cheswood St, Houston 77087 | (713) 640-1358 |
| Glamox-Mariteam 9000 Clay Rd 104, Houston 77080 | (713) 690-8383 |
| Marine Offshore Electric Svc 3612 Mangum Rd, Houston 77092 | (713) 681-0512 |