The scene of a fire is unpredictable. For a start, people inhale large amounts of smoke, causing fatigue and even unconsciousness. In the case of ordinary escape doors with handle locks or ball locks, it is obviously more difficult to pull down or turn the handle to push the door out. If the smoke i

The exit device is available in two design styles.1.The contemporary touch bar (touch bar) type:The touch bar type usually is a one-piece assembly consisting of a rectangular body extending from the lock stile to the hinge stile. Part of the body protrudes beyond the unit as a touch bar (touch pad/c

The door scheduling is suitable to the design which is belong to designer. The designers must have concept of design, and then find the door hardwares which meet the design's requirement of designers.1.FactorsThe location of doorThe functions of inter door and outer doorThe situations of safetyThe s

These standards are recommended by the Hollow Metal Manufacturers Association as representing the long accepted usual preferences of both architects and users under normal conditions of use. Under some circumstances these standard locations are inadvisable for certain items based on accessibility co