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    Solar radiation is the main source of natural ultraviolet. UV accounts for 3% of the total solar energy, which is divided into UVA (wavelength 315-380nm) and UVB (wavelength 280-315nm). UVA is called "aging rays" which causes the aging of human skin as well as furniture items. UVA enters the room through glass. UVB causes more damage than UVA, however, it does not enter the room through window glass. Therefore, UV glass’function is to block UVA rays from coming into the house.

    Anti-UV parameters: ultraviolet transmittance, visible light transmittance, total solar infrared heat transmittance gIR, and heat transfer coefficient K.



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