... :Polystyrene Densityrange: 80g/sm--230g/sm thinkness: 2-20mm size:4'x8,5'X10' paper ps foam board paper Size:A4 ... . Thickness:1mm, 3mm, 5mm, 8mm, 10mm etc. Features:1. Smooth, Light-weight.2. sound insulation, heat insulation .3. weather proof ... .4. easy to clean and maintain. Application:1. Advertisement: exhibition & display, ...