紫外线隔断率 UV Reduction

The ratio of the difference in ultraviolet transmission of the glass before and after installing   film to the ultraviolet transmission of the glass with on film. It is expressed as a percentage   and is determined by the respective UV transmission values of the glass with and without film.   使用薄膜之前的穿过窗户的紫外线数量与使用后的比值，用百分比表达，它是由使用薄膜前后的紫外线穿透值决定的。