| Business | Phone |
| Data Ranger Computer Products 507 E Main St, Manchester 48158 | (734) 428-8551 |
| Emc Paradigm 536 W Main St, Manchester 48158 | (734) 428-1088 |
| Peckham Consulting 136 E Main St, Manchester 48158 | (734) 428-0270 |
| Modular Software Systems 6580 Peckins Rd, Manchester 48158 | (734) 433-0315 |