PPS resin modified with long fibers is a kind of super - engineering plastics with excellent heat - resistance and chemical resistance.The number of modified PPS resins in use continues to grow, largely because they are widely used in automotive applications.Because automotive applications require heat-resistant, lightweight and high-strength materials instead of metals, PPS resins containing elastomers can be used in automotive applications where flexible functions are required, such as gaskets and auto parts.However, it is not easy to increase the flexibility of PPS resins while maintaining their heat and chemical resistance.