1. Otis Elevator Co 100 Renaissance Ctr Ste B7, Detroit, MI 48243 Coordinate: 42.32988,-83.04059 Phone: (313) 259-0640
2. Integrated Elevatorconcepts 6300 E Fort St, Detroit, MI 48207 Coordinate: 42.34605,-83.01142 Phone: (313) 259-7071