The excellent fireproof glass door is fired in a high temperature flame of more than 1000 degrees. After testing, it can be kept for 90 minutes or even longer. High strength is also one of the advantages of fireproof glass, which can be 6-12 times as strong as ordinary glass; It is 2-3 times that of tempered glass.

ZHTdoors fire doors, 31 years of production experience in fire doors and Windows. The main UL fire doors, EN fire doors,  BS EN fire doors, etc.,.We have certification.ZHTdoors support OEM and free design.Our advantages:good quality, factory price, good service.Welcome to consult us.