Fiberglass-reinforced plastics, also known as glass-reinforced plastics or glass fiber reinforced plastics. Due to the different types of resins used, there are polyester glass-reinforced plastics, epoxy glass-reinforced plastics, and phenolic glass-reinforced plastics. Glass is hard and brittle, with excellent transparency and properties such as high-temperature resistance and corrosion resistance; at the same time, steel is hard and not easily broken, also featuring high-temperature resistance. Thus, people began to think that if a material could be created that possesses the hardness, high-temperature resistance, and corrosion resistance of glass, along with the hard and unbreakable characteristics of steel, it would certainly have great utility. After research and testing, such a composite material was finally developed.