UL Fireproof Door Quality

UL steel fireproof door is made of steel frame, door leaf frame and door leaf panel. If the door leaf is filled with materials, it is filled with fire and heat insulation materials that are harmless to human body. The utility model relates to a fireproof door with a certain fire resistance, which is composed of fireproof hardware fittings.

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。

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