On March 6, 2019, Teijin Automotive Composites Professional Group developed a multi-material composite car door concept. This multi-material side door module consists of carbon fiber sheet molding compound (SMC), glass fiber SMC and unidirectional glass fiber Made of reinforced plastic (GFRP), it has the advantages of high strength, low weight, excellent heat resistance and shock absorption, excellent design freedom, and the ability to achieve deep drawing. Teijin plans to launch commercial door modules in 2025, striving to become a global supplier of multi-material auto parts.