12mm triple –wall Polycarbonate(PC) sheet is suitable for construction lighting, where heat preservation is highly requested. The perfromance of heat preservation of this product is superior to normal glass . And its advantage of cold-bending provides designers ideal and free space to creating. It features high impact-resistance and can provide high security ensurence .Sheet which coextruded with anti-drop layer in the inner surface is suitable for lighting of mordern agriculture conservatory and swimming pool where full of dense moisture. Sheet which coextruded with anti –UV layer is capable of protecting people from ultraviolet harm, and protecting organic or other macromolecule material in storage and museum from fading or other damage under the influence of ultraviolet.