| Business | Phone |
| Mac Cullough Brown Assoc 3838 Camino Del Rio N # 155, San Diego 92108 | (619) 325-0440 |
| Fine Line Drafting 4511 Pescadero Ave, San Diego 92107 | (619) 226-2228 |
| Industrial Automation Control 6377 Nancy Ridge Dr, San Diego 92121 | (858) 552-8040 |
| Layfa Inc 2166 Pine St, San Diego 92103 | (619) 260-0355 |