| Business | Phone |
| Acute Engineering Inc 8820 Will Clayton Pkwy A, Humble 77338 | (281) 348-9555 |
| Barringer & Assoc 8003 Pine Cup Cir, Humble 77346 | (281) 852-6810 |
| Marshall Engineering Corp 3930 Fm 1960 Rd E, Humble 77338 | (281) 852-4131 |
| Grimm Engineering Inc 20202 Highway 59 N, Humble 77338 | (281) 540-2569 |
| M & Q Engineering Inc 1801 Kingwood Dr, Humble 77339 | (281) 359-0133 |
| Hcs Group Inc 1030 1st St E, Humble 77338 | (281) 540-4838 |
| Knight Engineering Svc 830 Wilson Rd, Humble 77338 | (281) 548-2777 |
| Kta-Tator Inc 9810 Fm 1960 Bypass Rd W, Humble 77338 | (281) 540-1177 |
| Moreno Engineering Inc 1521 Green Oak Pl, Humble 77339 | (281) 359-0133 |