| Business | Phone |
| A P Engineering Svc 1039 Interstate 35 E, Carrollton 75006 | (972) 323-8315 |
| Cometal Engineering 1611 N Interstate 35e 428, Carrollton 75006 | (972) 242-9799 |
| Titan Engineering Inc 2340 E Trinity Mills Rd, Carrollton 75006 | (214) 390-1400 |
| Bloom Engineering Co 4229 Crestedge Ln, Carrollton 75010 | (972) 492-3781 |
| Precision Flow Products 4216 Sagemont Dr, Carrollton 75010 | (972) 492-2907 |
| Michael Peeples Engineers 1930 E Rosemeade Pkwy, Carrollton 75007 | (214) 731-9948 |