PP pleated cartridge filter , nominal and absolute grade . the micron rate can be 0.1um,0.2um,0.45um,1.0um,5um,10um ... 50um PP pleated cartridge filter , nominal and absolute grade . the micron rate can be 0.1um,0.2um,0.45um,1.0um,5um ... ",40"Widely used for water treatment , food &beverage , pharmaceutical , chemicals . for the prefiltration use. PP pleated cartridge filter /depth filter /water filter