UL fireproof doors are used in North America and other countries and regions that have recognized UL standards, meeting the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. Different from other fire doors, American standard fire doors are obviously characterized by that American standard fire doors need to pass the fire water strike test.

ZHTdoors iingcango zomlilo, iminyaka eyi-31 yamava okuvelisa kwiingcango zomlilo kunye neWindows. Iingcango eziphambili zomlilo ze-UL, iingcango zomlilo ze-EN, iingcango zomlilo ze-BS EN, njl., Sine-certification.ZHTdoors ixhasa i-OEM kunye ne-design.Our yamahhala: umgangatho omhle, ixabiso lefektri, inkonzo enhle.Wamkelekile ukuba uqhagamshelane nathi.