Acrylic can not filter out UV acrylic (PMMA), through 73% of UV.
Part of the acrylic sheet manufacturers in order to increase the effect of the UV filter and nature in the acrylic surface coating treatment. On the other hand, in the condition of ultraviolet irradiation, compared with PC, acrylic has a better stability. In fact, the nature of the ordinary acrylic relatively stable under outdoor conditions of long-term irradiation, irradiation time, more than a few years only slight discoloration, does not affect the use of the appearance and function of the entire product.
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