1.Name:plastic/pvc screws 2.Materials:PVC-U,PVC-C,PP-GF 3.Standard:DIN, JIS, ANSI, BS 4. ... Certificate:CE, ISO9001:2008 1)Name: plastic/pvc screws2)Materials: PVC-C,PVC-U,PP-H,PP-GF3)Sizes: M6-M20,T12 ... , engineering of Recycled water, Aquatic Culture, civil using Construction. plastic/pvc screws