Glass fiber reinforced polypropylene is a kind of PP modified material with glass fiber as a main additive. It controls the reasonable length of glass fiber through a unique process and twin screw combination, while selecting other high-performance additives to make glass fiber and resin have better compatibility and dispersion, which greatly improves material rigidity, impact strength, tensile strength, heat resistance and dimensional stability. The materials can meet the ROHS environmental protection requirements, and are mainly used in chair accessories, washing machine drums, auto fans, household appliances and other components.