| Business | Phone |
| Cpk Systems Chula Vista 91910 | (619) 656-9479 |
| Enercon Engineering Chula Vista 91911 | (619) 482-9517 |
| Parson Transportation Group 2016 Olympic Pkwy, Chula Vista 91915 | (619) 591-2291 |
| Odyssey Systems Consltng Group 640 Gretchen Rd, Chula Vista 91910 | (619) 476-7290 |
| George G Sharp Inc 1065 Bay Blvd # B, Chula Vista 91911 | (619) 425-4211 |