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Yong’in eshigining vazifasi – kutilmagan yong’in sodir bo’lgan taqdirda yong’inga va tutunning tarqalishiga qarshi turish, bizni evakuatsiya qilish uchun vaqt ajratish imkonini beradi. Bizning yong’inga qarshi eshiklarimiz yong’inga chidamli, arzon, ovoz va issiqlik izolyatsiyasi va bardoshlidir. Biz bilan maslahatlashish uchun xush kelibsiz.

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