| Business | Phone |
| Kdi Engineering Inc 1011 S Broadway St, Carrollton 75006 | (972) 242-4140 |
| Engineering Design Management 2540 Kings Gate Dr, Carrollton 75006 | (972) 418-8509 |
| Floresca Associates Inc 3330 Earhart Dr # 100, Carrollton 75006 | (972) 478-7393 |
| Haag Engineering Co 2455 Mciver Ln, Carrollton 75006 | (972) 247-6444 |
| Hennessey Engineering Inc 1417 W Main St, Carrollton 75006 | (972) 245-9478 |
| Instruction Consulting Intl 1601 Luna Rd, Carrollton 75006 | (972) 466-1103 |
| Spectrum Firm 1409 Kleber Dr, Carrollton 75010 | (972) 492-0330 |