The fire door has a variety of different opening operations, and also has a variety of professional functions, which can be effectively closed or isolated. The fire door can not spread outward for a certain period of time, so as to effectively control the fire.

fire door keep shut sign,孟买的防火门制造商，fire door latch,710mm fire door,

防火门厂家,家用防火门,防火门,fire door keep shut sign,金属防盗门，防火门标准，fire door latch,出口门宽度系数，防火门锁，710mm防火门，

防火，门漆，fire door latch,防火门马来西亚，金属门