1220*2440mm WPC three-layer building formwork production line Waterproof, fireproof, anti-corrosion High quality Long life ... L*W*H2,Main Material:PVC resin, processing additives and filling agent A- --PVC, B- --WPVC3,Extruder: 80/156 Conical Double Screw Extruder , ... : > 0.6Mpa5,Power supply: customized PRIMARY SPECIFICATION OF PVC FOAMED BOARD:Length and width of the product1220mm width with settled ...