... calcite, potassium feldspar, talc, marble, limestone, dolomite, jade-like stone stone, lime, activated clay, activated carbon, bentonite, kaolin, cement, ... priciple. The aim of our company is Pragmatic Innovation, Mutual Benefit.Company informationGongyi City Songling Tengda Machinery Factory ... can send you the detail information soon. Stone hardness less than 7 stage Raymond grinding equipment