... , BS 4.Certificate:CE, ISO9001-2008 1)Name: plastic/pvc screws2)Materials: PVC-C,PVC-U,PP-H,PP-GF3)Sizes: M6-M20,T12 ... , anti-corrosion and environment-friendly7)It is widely used in chemistry, electron, metallurgy, plastic, electroplate, irrigation, treatment Sewage, engineering of Recycled water, Aquatic ...