PN6/PN66 series filter cartridges are made of natural hydrophilicNylon6/Nylon66 membranes. High porosity and uniform microporedistribution are the main characteristics of the filter material, withlarge flow rate, long use life, and superior chemical compatibility.PND66 series filter cartridge is made of double-layer membrane, hashigher filtration efficiency, qradient precision confiquration, and longerservice life.