China
Narwal
Robot vacuums and nothing else, with designs that go their own way — dust is stored in the robot rather than the dock. Service is a mail-in RMA and consumables are proprietary.
Narwal builds an elaborate base station around washing and drying mop pads, then leaves dust collection inside the robot itself. The dock does less as a result and makes far less noise, and a bag change becomes a job you do at the machine rather than at the station.