cartridge filter housing is also known as filter element filter or security filter, its beautiful appearance, simple and reasonable structure, using internal and external polishing, with low cost, small size, large filtration area, fast filtration speed, low blocking rate,  alkali corrosion resistance, long service life and so on. In the internal add different precision filter elements (such as PP filter, wire wound core, folding filter, ceramic filter and other different specifications of the filter elements) can remove all kinds of small particles , colloid, metal, bacteria, residual chlorine and other impurities in the water or air