| Business | Phone |
| Empire Steel Building 5230 Carroll Canyon Rd, San Diego 92121 | (858) 362-0464 |
| Aed Consultants 2810 Canon St, San Diego 92106 | (619) 223-3109 |
| Peck Engineering Inc 13908 Capewood Ln, San Diego 92128 | (858) 486-9000 |
| Trakloc International 7340 Trade St, San Diego 92121 | (858) 689-6936 |