Fiber-reinforced thermoplastics are one of the most promising high-performance automotive lightweight materials available today. They are more competitive than traditional non-renewable thermoset composites and aluminum-magnesium metal materials. The outstanding advantages of design and molding manufacturing integration are more energy-saving and environmentally friendly. The car interior system is an important part of a car, and the design work of the interior system accounts for more than 60% of the entire car design work, far exceeding the car shape, and is one of the most important parts of the car body. Each automaker usually has a large automotive interior team to do a lot of engineering work related to the interior.