... Long lifespan 3.Good sharpness 4.Competitive price A grade Diamond stone abrasive for granite BRIEF DESCRIPTIONDiamond ... W65/68, H63Resin-bonded fickertL90, W41/49, H43120#,180#,240#,320#,400#,600#,800#,1000#,1200#,1500#,3000 ... our own factory and engineers, we also build a new factory, have 50worker,and our machine ... are keep in good status, a new freeway is building near our company.We ...