| Business | Phone |
| Fagin Resources Inc 8140 Walnut Hill Ln 500, Dallas 75231 | (214) 369-6300 |
| Dai Inc 11060 Grader St, Dallas 75238 | (214) 340-2555 |
| Lockwood Greene Engineers Inc 14901 Quorum Dr 900, Dallas 75254 | (972) 991-5505 |
| Stv Inc 1201 Main St 1512, Dallas 75202 | (214) 651-7337 |