| Business | Phone |
| Mc Alpine Engineering 3641 Burning Tree Dr, Bloomfield Hills 48302 | (248) 646-4500 |
| Bandagi Technologies Inc 2001 E Spinningwheel Ln, Bloomfield Hills 48304 | (248) 338-6661 |
| Mls Associates Inc 550 Hulet Dr 101, Bloomfield Hills 48302 | (248) 874-2540 |
| Cascade Engineering 7 W Square Lake Rd, Bloomfield Hills 48302 | (248) 452-5694 |