High impact polystyrene, commonly known as HIPS, is a thermoplastic material made of elastomer-modified polystyrene. The two-phase system consisting of a rubber phase and a continuous polystyrene phase has developed into an important polymer commodity in the world. This general product has a wide range of impact properties and processing properties, making it widely used in automotive, equipment, electrical products, furniture, household appliances, telecommunications, electronics, computers, disposables, medicine, packaging and entertainment markets.