| Business | Phone |
| Computer Builders Warehouse 1993 Tobsal Ct, Warren 48091 | (586) 756-2600 |
| Enertron 24705 Mound Rd, Warren 48091 | (586) 757-1200 |
| Network One Computer Systems 13428 E 11 Mile Rd, Warren 48089 | (586) 754-4440 |
| Hewlett-Packard 29999 Van Dyke Ave, Warren 48093 | (586) 582-0150 |