Density is approximately half the glass, shock resistant strength are much larger than the inorganic glass, light and strong material. [Features] · density is approximately half the glass, shock resistant strength are much larger than the inorganic glass, light and strong material. Weather resistant, so a good product to the sun when you are also not yellow or without falling apart. · Color and processing resistant well or damage to the glass, like the larger debris to 飛bi散 tiru as required.