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 branddøre, 31 års produktionserfaring indenfor branddøre og vinduer. De vigtigste UL branddøre, EN branddøre, BS EN branddøre osv. Vi har certificering. ZHTdøre understøtter OEM og gratis design. Vores fordele: god kvalitet, fabrikspris, god service. Velkommen til at konsultere os.