As its name suggest the item is used for general purpose. The range of its use is large starting from Advertising Light Box to Insulators and even in Interior Decoration. About the Product : It is a synthetic aromatic polymer made from the monomer styrene. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapor and has a relatively low melting point. Polystyrene is one of the most widely used plastics, the scale of its production being several billion kilograms per year.