High impact polystyrene (HIPS) is a low cost, tough plastic material that is easy to thermoform and fabricate. It is often used for: Retail display, Countertop point-of-puchase displays, Banners, and Indoor signs.High impact polystyrene can be assembled with mechanical fasteners, solvents, or adhesives.Printable grades of polystyrene can be decorated using a variety of printing methods including: Screen-printing, Offset lithography, Flexography.