| Business | Phone |
| Benson's Corp Highland 92346 | (909) 425-1781 |
| D & M Inc Highland 92346 | (909) 862-6900 |
| Hyperactive Components 7750 Palm Ave # O, Highland 92346 | (909) 863-9780 |
| Imagine This 6909 San Francisco St, Highland 92346 | (909) 862-4279 |
| Leever Electronics 27214 Baseline St, Highland 92346 | (909) 862-7833 |
| Leever Electronics 7019 San Francisco St, Highland 92346 | (909) 864-3014 |
| General Technique 2124 Palm Ave, Highland 92346 | (909) 864-8789 |
| Wentech Computing 27303 Baseline St, Highland 92346 | (909) 862-1400 |