The surface of Polycarbonate sheet is treated with special anti-ultrviolet technique to ensure the stability of ultraviolet resistance. The product can preserve its innate optical property and good weatherability after long-time service. No speedy aging can be generated by ultraviolet. As indicated in the following table, ultraviolet within350-bicron wavelengths can hardly penetrate the sun sheet. As a result, Goodlife hollow profile is more applicable for advertising material other than the general building materials.