UL fireproof door can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is used in North America and other countries and regions that have recognized UL standards. 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 portas corta-fogo, 31 anos de experiência em produção de portas corta-fogo e janelas. As principais portas corta-fogo UL, portas corta-fogo EN, portas corta-fogo BS EN, etc., temos certificação. ZHTdoors suporta OEM e design gratuito. Nossas vantagens: boa qualidade, preço de fábrica, bom serviço. Bem-vindo a nos consultar.