| Business | Phone |
| All Media Electronics 13505 Yorba Ave # Q, Chino 91710 | (909) 591-1559 |
| Pacific States Systems Co 7000 Merrill Ave, Chino 91710 | (909) 597-5201 |
| Real Computers 4141 Riverside Dr, Chino 91710 | (909) 591-5567 |
| Tri Summit Computer Cnsltng 4650 Revere Ct, Chino 91710 | (909) 627-2907 |
| Vanguard Network Engrg Inc 14175 Telephone Ave, Chino 91710 | (909) 548-0333 |