... to chemical effects,so it plays very impotant part in filtration industry such as chemical industry,food industry and so on ... sifting solids and clear filtration of liquids, as in the cleaning of fuels or hydraulic liquids, or in water treatment.We also have ... ,the material can be SUS304,304L,316,316L.the MIN filtration rate,which is also the aperture size can be 34 ...