Bag filter can be used in primary filtration, intermediate filtration and the ultimate precision filtration, the volume is smaller than other filters, the space requirements are low, the installation is rapid, easy to control, can meet the high precision filtration needs, widely used in a variety of fine particles, filtration accuracy from 1um to 800um are applicable, because of its large filtration area, the required filter pressure is small, So its filtration efficiency is extremely high. The efficiency of the same size filter bag can be equal to the efficiency of ten filter element filters, which greatly reduces the filtration cost, and the filtration flow is large and the durability is strong