Pleated Micron Filter Cartridge Connection Model Chemical Resistance Acid And Alkali Resistance PP Filter Housing 0.5 micron oil absorption bag high efficieny oil filter bag   Wuxi Tr Filtration Ltd make 5 layer to reach 0.5 micron.Pleated Micron Filter Cartridge Connection Model Chemical Resistance Acid And Alkali Resistance PP Filter Housing 0.5 micron oil absorption bag high efficieny oil filter bag   Wuxi Tr Filtration Ltd make 5 layer to reach 0.5 micron.Pleated Micron Filter Cartridge Connection Model Chemical Resistance Acid And Alkali Resistance PP Filter Housing 0.5 micron oil absorption bag high efficieny oil filter bag   Wuxi Tr Filtration Ltd make 5 layer to reach 0.5 micron.