... : a non-professional worker also can operate. Scrub, suction at one step Efficiency: 1900 s.q.m Floor Scrubber GM50/GM50B Brushing ... , suction can be done in one step, and floor as good as new after brushing. Dirty water, soil, sands, oil, which all ... effect and efficiency.2. Fast and convenient: scrub, suction at one step, which clean dirt thoroughly; a non-professional worker also can ...