Aperture Zinc oxide plasta
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Ụlọ ọrụ ahụike na-eduzi 100% owu akwa snowflake oghere zinc oxide plasta mpịakọta
E kesara obere oghere n'otu n'otu, a na-emepụta plasta a kpụrụ akpụ iji mee ka ikuku ikuku na penetrability dị elu.