Ntxuav lub qhov teeb ntawm UV teeb kom paub tseeb tias cov nyhuv nyhuv
Cov impurities hauv tus cwj pwm los sis lub zom zom ntawm cov khoom siv ntawm cov UV yuav txo qhov ultraviolet, ces obviously yuav txo tus UV number case curing zoo.Xim li no, dai cov teeb UV los so nws cov ntaub so huv nrog daim ntaub mos nrog dlhau cawv siv cov teeb txawb UV rau ib lub sijhawm kom paub tseeb tias nws qhov chaw huv yog qhov huv si.
