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BRIEF INTRODUCTION:The main purpose of the lock lock is to be convenient to escape in case of emergency (such as fire, etc.). Push bar lock is access controller is widely used, its solid structure, prevent outsiders from unauthorized access to the internal, and allows internal staff to go out free in case of emergency, unauthorized use will emit a high decibel alarm.Push bar lock is mainly used for the protection of the emergency exit, shipping and receiving doors, security doors, doors and other internal channels, has been widely used in an emergency exit the airport command center, hotels, s