Po’latdan yong’inga chidamli eshik bargi inson tanasi uchun zararsiz yong’inga qarshi materiallar bo’lgan materiallar bilan to’ldirilgan. Foydali model ma’lum bir yong’inga chidamliligi bo’lgan eshikka tegishli bo’lib, u yong’inga chidamli apparat qismlaridan iborat. Po’lat yong’inga qarshi eshiklarning afzalliklari ularni jamoat binolarida katta bozor ulushini egallashga majbur qiladi.

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