| Business | Phone |
| F & M Engineering Contractors 3432 Dwight Rd, Elk Grove 95758 | (916) 391-8042 |
| Glenn Reddick Professional Svc 7800 Chaplin Ct, Elk Grove 95758 | (916) 712-2054 |
| Mechtronix Engineering 8568 Dewberry Way, Elk Grove 95624 | (916) 682-3900 |
| Mhc Engineering 8675 Maranello Way, Elk Grove 95624 | (916) 525-3355 |