... of particles, so widely apply to fine filter and degerming technology. Filter element number per filter cartridge:1,3,5,7,9,11,13 ... ,15,21Folding filter element length:10,20,30, 40Filter element material: polypropylene, gather four ethylene, acetate fabricFiltration ... 0.1,0.22,1,3,5,10Filter element including hydrophobic property (apply to gas) and hydrophily (apply to liquid), select and ...