| Business | Phone |
| Massimo System Management Inc 3839 Old Creek Rd, Troy 48084 | (248) 244-8802 |
| Cilex 2900 W Maple Rd 310, Troy 48084 | (248) 649-4200 |
| Enterprise Information Sltns Po Box 307, Troy 48099 | (248) 689-7787 |
| Oas Group 1748 Northwood Dr, Troy 48084 | (248) 288-4050 |