| Business | Phone |
| Douglas Mc Kerrow & Assoc 3284 Talbot St, San Diego 92106 | (619) 223-5157 |
| Duncan Enterprises Inc 4655 Cass St # 214, San Diego 92109 | (858) 272-1779 |
| Rck Controls Inc 3954 Murphy Canyon Rd, San Diego 92123 | (858) 569-7141 |
| Pacific Technical Products 5850 Oberlin Dr, San Diego 92121 | (858) 450-0204 |
| George T Hall Co 4289 Taylor St, San Diego 92110 | (619) 297-4671 |
| Intec Controls Inc 9730 Distribution Ave, San Diego 92121 | (858) 578-7887 |
| Johnson Controls Inc 9630 Ridgehaven Ct # A, San Diego 92123 | (858) 560-8033 |