| Business | Phone |
| Ant Computer Inc 20760 Carrey Rd, Walnut 91789 | (909) 598-3315 |
| Our Computer Inc 3880 Valley Blvd, Walnut 91789 | (909) 594-5131 |
| Facility Innovations 19510 Buggy Whip Cir, Walnut 91789 | (626) 810-8031 |
| Ids Co 675 Brea Canyon Rd, Walnut 91789 | (909) 444-3008 |
| Morris Tech Inc 20836 Carrey Rd, Walnut 91789 | (909) 869-0577 |
| P C Holiks 1123 Brea Canyon Rd, Walnut 91789 | (909) 595-7986 |
| P C To Pc Computers 20848 Carrey Rd, Walnut 91789 | (909) 595-7398 |
| S 4 Software Walnut 91789 | (626) 965-2225 |
| Star Educational Systems 3820 Valley Blvd # E, Walnut 91789 | (909) 595-5689 |