industry true union ball valve 1.Materials: PVC-U,PVC-C ... 3.Certificate:CE, ISO9001:2008 4.Size:1/2"-4" industry true union ball valveMaterials: PVC-U,PVC-C,PP,PP ... "High quality,Clear, light weight, rustless, oxidation-resistant, anti-corrosion and environment-friendlyIt is widely used in chemistry, electron, metallurgy, plastic, electroplate ...