| Business | Phone |
| Electro-Diagnostic Imaging Inc 1206 W Hillsdale Blvd # D, San Mateo 94403 | (650) 341-5054 |
| Halbar North Inc 3 37th Ave # 12, San Mateo 94403 | (650) 349-4700 |
| Hnl Technologies 2222 Alameda De Las Pulgas, San Mateo 94403 | (650) 349-4994 |
| Northwest Imaging Equipment 22 13th Ave, San Mateo 94402 | (650) 372-0937 |