... who developed and manufactured the high speed and non-dust concrete floor grinder in China3,Furnished with JS second ... motor5,Premium bearing6,Auto balanceStandard configurations:1,Machine body of dust free concrete grinder - 1ea2,10m electric wire - 1 ... Round plate for resin bond pads and sand paper - 1ea5,Dust skirt - 1ea6,Tool kit for maintenance - 1eaSpecifications: ModelGrinding ...