The concept of composite material refers to a material can not meet the requirements of use, need to be composed of two or more kinds of materials together, another can meet the requirements of the material, namely composite material. For example, a single kind of glass fiber, although the strength is very high, but the fibers are loose, can only withstand tension, can not withstand bending, shearing and compressive stress, is not easy to make a fixed geometric shape, is soft body. If they are glued together with synthetic resins, a variety of rigid products with fixed shapes can be made to withstand tensile stresses as well as bending, compression and shear stresses. This constitutes a glass fiber reinforced plastic matrix composite. Because its strength is equivalent to steel, and contains glass components, also has the color, shape, corrosion resistance, electrical insulation, heat insulation and other properties like glass, like glass, the history of the formation of this easy to understand the name "glass steel", this term is proposed by the former national building materials industry Minister Lai Jifa comrade in 1958, from the building materials system to expand to the country. The meaning of glass fiber reinforced plastic refers to glass fiber reinforced material, synthetic resin as a binder reinforced plastic, called glass fiber reinforced plastic abroad. With the development of our glass steel business, as a plastic based reinforcement material, has been expanded from glass fiber to carbon fiber, boron fiber, arylon fiber, alumina fiber and silicon carbide fiber, no doubt, these new fiber reinforced plastic, is some of the high performance fiber reinforced composite materials, and then the common name of glass steel can not be summarized. Taking into account the history of the origin and development, usually the use of glass steel composite materials, such a name is more multi-faceted.