| Business | Phone |
| Mepco Inc 11400 Dumas St, Houston 77034 | (713) 941-6969 |
| Holley Industrial Balance Svc 7511 Wynlea St, Houston 77061 | (713) 454-0000 |
| Houston Dynamic Svc Inc 8150 Lawndale St, Houston 77012 | (713) 928-6200 |
| International Precision 5933 Heffernan St, Houston 77087 | (713) 645-2250 |