... board bonded between two sheets of high-impact polystyrene or white card paper. It is also flatness, light-weight, rigid and ... and so on. The boards have PS surface, paper surface, adhesive release paper. They can be cut with a knife, and ... . Weather proof.4. Easy to clean and maintain.5. Color: white, red, blue, yellow, green, black.Application:1. Advertisement: exhibition & display ...