HIPS is a high-impact polystyrene product produced by adding polybutadiene rubber particles to polystyrene. HIPS sheets have the advantages of processability, excellent functions, good hardness and stiffness, low static electricity generation, and easy vacuum forming, so it is used to make a variety of blister package products and electronic industrial products. The main application fields of HIPS sheets are medical blister, food blister, electronic packaging blister, household appliance blister, toy blister, etc.