... the hot welding technique without binder Full polypropylene(PP) pleated water filter Technical Parameter: MaterialMediumPP fibre membraneFilter Core/cagePolypropylene (PP)Gasket (optional ... ,10,20,30,40,50 (inch)Micron rating0.1, 0.2, 0.45, 0.65, 1, 3, 5, 10, 20, 30 ... industryGas filtration / othersISO9001-2000 quality certificate Full polypropylene(PP) pleated water filter