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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 د اور وژنې دروازې، د اور دروازو او وینډوز کې د 31 کلونو تولید تجربه. د اصلي UL اور وژنې دروازې، د اور وژنې دروازې، BS EN اور وژنې دروازې، او نور، موږ تصدیق لرو. ZHTdoors د OEM او وړیا ډیزاین ملاتړ کوي. زموږ ګټې: ښه کیفیت، د فابریکې قیمت، ښه خدمت. ښه راغلاست موږ سره مشوره وکړئ.

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