| Business | Phone |
| Commercial Sound Design Inc 1824 Grindley Park St, Dearborn 48124 | (313) 277-2035 |
| Kla Laboratories Inc 6800 Chase Rd, Dearborn 48126 | (313) 846-3800 |
| York Electronics 10631 W Warren Ave, Dearborn 48126 | (313) 582-7767 |
| Vti Technologies Inc 1 Parklane Blvd, Dearborn 48126 | (313) 425-0850 |