The surface treatment process of steel fire doors is more diverse. Besides, steel fire doors can be filled with a variety of fireproof materials, which have good fire and smoke prevention capabilities, as well as sound insulation, and are more suitable for schools, hospitals and other places that are very sensitive to noise.

ZHTdoors 防火扉、防火扉および Windows での 31 年の生産経験。 主な UL 防火扉、EN 防火扉、BS EN 防火扉など。私たちは認定を受けています。ZHTdoors は OEM と無料のデザインをサポートしています。私たちの利点: 良質、工場価格、優れたサービス。