| Business | Phone |
| C & C Building Automation Co 390 Swift Ave, San Francisco 94080 | (650) 685-4044 |
| Injury Control Systems 3 S Linden Ave, San Francisco 94080 | (650) 875-3605 |
| Jensen Instrument Co 345 Littlefield Ave, San Francisco 94080 | (650) 589-9720 |
| Yamas Controls Inc 1 S Linden Ave # 1, San Francisco 94080 | (650) 616-7400 |
| Controlco 35 Dorman Ave # 2, San Francisco 94124 | (415) 647-9445 |
| S P Controls 601 Minnesota St, San Francisco 94107 | (415) 642-2600 |