~ Application
 Polishing for concrete floor
 Cleaning for floor of facilities
 Characteristics and Advantages
 Can get fine polishing surface as polishing surface is wide
 It is for concrete and there are various types depending on strength.
 There are #20, #30, #80, #150 depending on grain size
 Applicable Grain Size
 for concrete #20, #30, #80, #150
                    soft concrete , 210, 240, 270, 300, 320, above 320 strength