| Business | Phone |
| Lgr Group 456 E Milwaukee St, Detroit 48202 | (313) 875-2456 |
| Utech Economics 1157 Concord St, Detroit 48207 | (313) 267-9500 |
| Research To Eradicate Environ 8104 E Jefferson Ave, Detroit 48214 | (313) 331-3050 |
| E T Enterprises 3427 S Bassett St, Detroit 48217 | (313) 388-0713 |
| Amerikcan Servicing Corp 400 Monroe St, Detroit 48226 | (313) 963-8140 |
| Gcw Svc 18033 Archdale St, Detroit 48235 | (313) 535-9095 |