| Business | Phone |
| Electrical Design Svc Inc 3845 La Sierra Ave # B, Riverside 92505 | (951) 351-1800 |
| Industrial Machine Control 455 W La Cadena Dr, Riverside 92501 | (951) 684-2553 |
| Jdsa 3780 12th St # B, Riverside 92501 | (951) 787-1957 |
| R L Shepard Assoc 18163 Hibiscus Ave, Riverside 92508 | (951) 776-0320 |