Insulation boards are composed of GF (special fiber), UP (unsaturated polyester), low-shrinkage additives, MD (filler), and various auxiliaries. They possess electrical insulation properties, mechanical properties, thermal stability, and resistance to chemical corrosion, with a wide range of applications. Primarily used in the automotive industry, railway vehicles, electrical and communication engineering, plumbing, flooring materials, explosion-proof electrical equipment enclosures, and wireless communication fields. Mechanical properties. The cured epoxy resin system exhibits excellent mechanical properties.