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Yong’in eshigi – bu barcha turdagi binolarda, ayniqsa ko’p qavatli binolarda ochilishi va yopilishi mumkin bo’lgan umumiy yong’inga qarshi komponent. Bu muhim yong’inga qarshi uskunadir. Texnik shartlarga javob beradigan yong’inga chidamli eshiklar o’rnatilgandan so’ng, eshikda texnik xususiyatlarning nomini ko’rish mumkin va yorliqda yong’inga chidamli eshikning aniq ma’lumotlari beriladi.

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