Shanxi fire door material, 金福鑫 door industry (certified), fire doors provided by the Shanxi Jin Fuxin Security Technology Limited. Shanxi Jin Fuxin Security Technology Co., Ltd. (www.sxjinfuxin.com) is specialized in the "parking system, Barrier, booth, fire doors, retractable doors, revolving doors, garage doors," the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Zhao. Divided by technology electronic fire doors, built-in fire door closers multifunction fire doors; press turned into a normally closed and normally open fire doors fire doors. Normally closed fire doors are generally made of fire doors, door frames, door closers, seals and other components, dual fan or fan normally closed fire door is also equipped with the sequencer. Normally closed fire doors usually do not need to provide professional electrical automation design, but also some special cases, such as: evacuation normally closed fire doors on the channel, when some large construction management side has on security and other requirements by the electrical design professional with fire doors , as comprehensive as possible to reduce security risks. For normally open fire doors, which is in addition to a normally closed fire doors all the accessories, they also need to increase the fire door fire door release switch Taiyuan project, and must be designed to provide controlled by electrical engineering. Usually applied to the flow of logistics more evacuation routes. Insulation in fire door (A class) fully insulated doorsets within the stipulated time, Taiyuan wood fire doors, fire doors can meet fire integrity and insulation requirements. Part of the fire door (Class B) partially insulated doorsets or greater within the prescribed 0.50 h, fire doors to meet fire integrity and insulation requirements. Non-insulated fire doors (class C) no insulated doorsets within the specified time, to meet the requirements of the fire integrity of fire doors.