Insulating boards are composed of GF (specialized yarn), UP (unsaturated polyester), low-shrinkage additives, MD (filler), and various auxiliaries. They possess electrical insulation properties, mechanical properties, thermal stability, and chemical corrosion resistance, with a wide range of applications. Primarily used in the automotive industry, railway vehicles, electrical industries, communication engineering, bathroom fixtures, flooring materials, explosion-proof electrical equipment enclosures, and wireless communication fields.