Iyo epurasitiki zvinhu zveakanakisa emagetsi fenzi insulators akagadzirwa epamusoro grade giredhi ine yakakwira giredhi UV inhibitor, iyo inogona kushandiswa kwenguva yakareba. iyo yakaderera yemagetsi fenzi insulators inogadzirwa yakajairwa ipurasitiki kana yakadzoreredzwa epurasitiki ine kana isina yakajairwa UV inhibitor, saka ichave inopwanya uye zera mushure mekushandisa kwenguva pfupi.