... line;2, Remove glue, oil, contaminants, mill scale and rust;3, Repair common floor problem: uneven slabs, high spots, trowel marks, damaged ... concrete;4, Level uneven surfaces and trip hazards;5, Grooving floor for slip resistance;6, Floor clean and preparation;Parameter ModelHWS190HWS200HWS255Working Width190 mm200 mm255 ...