UV Accelerated Weathering Tester is also well known as UV test chamber, which is a type of environmental test chamber using the fluorescent UV as the light source to determine the resistance of plastics, leathers, rubbers, fabrics, etc. to weathering under the specified conditions. We know that Ultraviolet light only accounts for 7 % of the total sunlight, but it plays a core role in the deterioration of materials. Not only does the ultraviolet, but UV test machine also can simulate dewing, high temperature, high humidity, night environment in a circular way. UV weathering test is an essential measure for people to research and master the degradation state of specimens in advance as time goes on.