Chelik yong’inga qarshi eshik fanati turli xil qalinligi bo’yicha uchta standartga bo’linishi mumkin, standart qanchalik baland bo’lsa, yong’in eshigining ovoz yalıtımı, issiqlik izolyatsiyasi effekti yaxshiroq

https://ztfiredoor.com/25551.html

favqulodda chiqish eshigi,favqulodda eshik qulfi,yong’inga qarshi eshik qulfi,yong’inga chiqish eshigi,fire escape door,emergency exit door for commercial buildings,favqulodda chiqish eshigi,fire exit door lock,yong’inga chiqish eshigi,steel fire exit doors,favqulodda eshik qulfi,emergency exit door alarm,favqulodda chiqish eshigi,24 hour door,fire exit door price,upvc fire exit doors,favqulodda eshik qulfi,external fire exit doors,fire exit lock,yong’inga chiqish eshigi,upvc external fire exit doors