t, liquid medium aging test, User specific condition aging test, etc.?Illumination aging is also divided into many kinds, there are indoor aging and outdoor aging. The indoor aging has xenon lamp aging, fluorescence ultraviolet aging, carbon arc aging and so on.Outdoor aging means exposure to test sites, including Florida and Arizona abroad, and Hainan, Dunhuang, Mohe, Lhasa and so on in China. These test sites are basically distinguished by dry heat and humid heat.These method are commonly use