UL Fireproof Door Nevada

Fire doors can be divided into normally closed fire doors and normally open fire doors according to the opening state. Normally closed fire doors are usually closed under the action of door closers. Therefore, it can prevent smoke from spreading in case of fire; Normally open fire doors are usually opened under the action of door closers. In case of fire, the automatic release switch is automatic, and the fire door closers are closed under the action of door closers and aligners.

درب ضد حریق ZHTdoors 31 سال سابقه تولید در درب ضد حریق و پنجره. درب های اصلی ضد حریق UL، درب های ضد حریق EN، درب های ضد حریق BS EN و غیره، ما گواهینامه داریم. درب های ZHT از OEM و طراحی رایگان پشتیبانی می کنند. مزایای ما: کیفیت خوب، قیمت کارخانه، خدمات خوب. از مشاوره با ما خوش آمدید.

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