JPF-E series cartridge adopts polyester or polypropylene spunbond non-woven as the filtration raw material, and because the spunbond nonwoven has the advantages of strong tension, high porosity and deep filtration, etc., after folding into a tight filtration layer (standard filtration area of 4 to 6 square feet), it ensures that the cartridge has the characteristics of good dirt-holding capacity and long filtration life. In addition, the product also has the advantages of light resistance, high temperature resistance, resistance to insects and mildew, good resistance to general chemicals, and strength will not be affected in strong acid (strength will be affected in hot alkali), etc.