| Company | Address, phone, e-mail | City | State | |
|---|---|---|---|---|
 | Modular Space Corporation | 8277 Rawsonville Rd Belleville MI 48111 P 734-461-6010 Send Email | Detroit | Michigan |
 | Ritz-Craft Corporation | 118 Deal Parkway, Jonesville, MI 49250 P 517-849-7425 Toll Free: 877-878-4025 | Jonesville | Michigan |