... PP 2)Pore size(um):0.1, 0.22, 0.45, 0.65, 1.0, 3.0, 5.0, 10 ... , 20 3)Dia(mm):68mm SPECIFICATIONS:PP Filter CartridgeMATERIAL: PP (Polypropylene) PORE SIZE: 0 ... request. FEATURES: 1. The membrane stack consists of PP super fine fiber membrane and imported deflector layer ... and possesses great quantity of taking in pollutants. 2. Extensive applicability 3. ...