| Business | Phone |
| Advanced Engineering 1150 E Palmcroft Dr, Tempe 85282 | (480) 966-4029 |
| Primatech 1295 W Washington St # 115, Tempe 85281 | (602) 685-9009 |
| Otak Inc 51 W 3rd St # 201, Tempe 85281 | (480) 557-6670 |
| Davey Cairo Engineering Inc 2121 W University Dr, Tempe 85281 | (480) 921-4080 |
| Morrison-Maierle Inc 80 E Rio Salado Pkwy # 201, Tempe 85281 | (480) 517-5800 |
| Infinity Engineering Svc 4500 S Lakeshore Dr # 344, Tempe 85282 | (480) 839-8600 |
| Jacobs Engineering Group Inc 875 W Elliot Rd, Tempe 85284 | (480) 763-8600 |