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1.71 Spin Photochromic Gray HMC Optical lens
Mitundu yanzeru yosinthira mandala imasintha ndi mphamvu ya kuwala kwa ultraviolet, kusintha kuya kwa mtundu, galasi limodzi limakhala ndi zolinga zambiri, palibe vuto losinthira, m'nyumba ndi kunja kosavuta, chitetezo chamaso.
Wanzeru mtundu kusintha chinthu chimasonyeza kukameta ubweya kamangidwe kagawo, pamene cheza ndi ultraviolet walitsa, molekyulu basi kutseka kutsekereza kulowa kuwala, ntchito photoresponsiveness wake wabwino ndi mitundu, kuyankha mofulumira kusintha kuwala, kothandiza kwambiri.
