| Business | Phone |
| Nanorex 2738 Turtle Ridge Dr, Bloomfield Hills 48302 | (248) 456-0700 |
| Perfect Software 2641 Indian Mound S, Bloomfield Hills 48301 | (248) 647-2839 |
| Comp Usa 2063 S Telegraph Rd, Bloomfield Hills 48302 | (248) 292-2600 |
| Roi Systems Group Inc 1668 S Telegraph Rd, Bloomfield Hills 48302 | (248) 333-1938 |