1.The pp hollow cross section plate is light and high strength ,moistureproof 2.Can be processed into the reusable container PC, PP, PE and PVC Plastic Hollow Cross Section Plate Extrusion Line 1.Construction of sunroof in buildings, halls, shopping centers,stadiums,public places of2.Entertainment and public facilities3.Rain shield of bus stations, garages,pergolas,corridors.4.Transparent shields ...