Sheet Moulding Compound (SMC Material) is the abbreviation for Sheet Molding Compound, fiberglass reinforced unsaturated polyester SMC. The main raw material from the SMC-specific yarn, unsaturated resin, low shrinkage additives, fillers and various additives composition. It is the early sixties of the twentieth century, first appeared in Europe in 1965 , the United States and Japan have developed this technology. In the late 80s, China has introduced the SMC foreign advanced production lines and production processes. SMC has excellent electrical performance, corrosion resistance, light weight and engineering design, easy, flexible, etc., its mechanical properties can be comparable with some of metal materials, thus SMC is widely used in transport vehicles, construction, electronics / electrical and other industries.