| Business | Phone |
| Vision R & D Inc 388 Market St # 500, San Francisco 94111 | (415) 623-2740 |
| Century Technology 225 Harris Ct, San Francisco 94080 | (650) 583-8908 |
| Epic Instruments Inc 279 Lawrence Ave, San Francisco 94080 | (650) 588-2260 |
| Ge Healthcare 389 Oyster Point Blvd, San Francisco 94080 | (650) 583-9964 |
| Monarchy International 380 Swift Ave # 21, San Francisco 94080 | (650) 873-3055 |
| Y K Systems Inc 320 Shaw Rd, San Francisco 94080 | (650) 583-8700 |
| Ceitronics 650 Townsend St, San Francisco 94103 | (415) 252-6640 |
| Compaq Computer Authorized 1110 Ortega St, San Francisco 94122 | (415) 242-1551 |
| Highland Technology Inc 320 Judah St, San Francisco 94122 | (415) 753-5814 |
| Leemah Electronics Inc 1088 Sansome St, San Francisco 94111 | (415) 394-1288 |
| Pacific Signal Inc San Francisco 94111 | (415) 397-5995 |
| Saraswati Associates 650 5th St # 505, San Francisco 94107 | (415) 977-0550 |