Properties and uses: This product is a polymer monomer of lens resin material. Its polymer has good light transmission, light weight, high strength, wear resistance and corrosion resistance. It can make optical lenses and optical lens with a refractive index of 1.55 to replace plexiglass; it can also be copolymerized with other monomers to make materials with high-strength and light-weight. It can also be used for the flexibilizer of acrylic sheet.