FRP, also known as GFRP, is a fiber reinforced plastic. It is generally a reinforced plastic with glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix, and glass fiber or its products as reinforcing material. Reinforced plastic, or fiberglass, is different from tempered glass.

Due to the variety of resins used, there are different types of polyester glass reinforced plastics, epoxy glass reinforced plastics, and phenolic glass reinforced plastics. Light and hard, non-conductive, stable performance, high mechanical strength, low recycling, corrosion resistance. Machine parts and automobiles, ship casings, etc. can be manufactured instead of steel.

FRP is a fiber reinforced plastic, commonly known as FRP (Fiber Reinforced Plastics), which is a fiber reinforced composite plastic. According to the different fibers used, it is divided into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic and so on. It is a composite material of glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as a reinforcing material and synthetic resin as a base material. The fiber reinforced composite material is composed of reinforcing fibers and a matrix. The diameter of the fiber (or whisker) is very small, generally below 10 μm, the defect is small and small, and the strain at break is about 30 parts per thousand. It is a brittle material and is easily damaged, broken and corroded. The matrix has much lower strength and modulus than the fiber, but it can withstand large strains, often has viscoelasticity and elastoplasticity, and is a ductile material.