filter fineness about 0.1um-60um larger filtering proportion sift more impurities. length species:5',10', 20', 30', 40', 60' consist of polypropylene filtering membrane, nylon and PTEE micro-aperture filtering membranewidely used in electronic industry, medical industry, chemistry , etc.filter fineness about 0.1um-60umlarger filtering proportion sift more impurities.length species:5',10', 20', 30 ...