Mainly used for the high-fine powder processing of over 280 varieties of non-flammable and non-explosive materials with the Mohs hardness of no more than 9.3, and humidity of below 6%, such as barite, calcite, feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, and insulation materials, in such industries as mine, chemical and construction.