| Business | Phone |
| Etic Engineering 637 3rd Ave, Chula Vista 91910 | (619) 425-3300 |
| Ram Golf Construction Inc 2375 Forest Meadow Ct, Chula Vista 91915 | (619) 397-5454 |
| Quality Engineering Corp 209 3rd Ave # 4, Chula Vista 91910 | (619) 585-3287 |
| Ortiz Corp General Engineering 788 Energy Way, Chula Vista 91911 | (619) 482-2076 |
| Montijo's Backhoe Svc 405 Palm Ave, Chula Vista 91911 | (619) 420-6635 |
| Intergraded Global Engineering 693 Marsat Ct, Chula Vista 91911 | (619) 423-4017 |