... domestic and foreign accelerated aging test machine, fully functional UV weathering test machine; unique maintenance-free design, more ... to obtain materials, the result of weathering. 4. UV testing machine with ultraviolet radiation, condensation, spray three processes, ... (mm) Wavelength range: UV-B wavelength range of 280 ~ 320nm UV-A wavelength range of 320 ~ 360nm Irradiation intensity: 0.45 ~ ...