The curtain surface of the fire roller shutter is raised and lowered through the transmission device and control system. Play the role of fire and smoke prevention, the product appearance is smooth and beautiful, and the shape is novel. It is an active fire divider, generally made of metal plates such as steel plates, composed of buckle rings or more connected methods, usually rolled up in the axle box at the top of the door and window, and put it down when the fire starts to prevent the fire from spreading from the door and window opening. Fire shutter doors are widely used in the fire partition area of industrial and civil buildings, can effectively prevent the spread of fire, ensure the safety of life and property, is an indispensable fire prevention facilities in modern buildings, has been included in the national building and other building design fire code. Widely used in high-end hotels, restaurants, libraries, theaters, large shopping malls, stations, underground projects and factories, garages and other buildings. According to the form of the curtain plate is divided into ordinary type and compound, ordinary type has fire, smoke, wind, rain, anti-theft and other functions. The function of the compound type is the same as that of the ordinary type, but the compound type does not need to add water curtain protection, which is especially suitable for dry water shortage and water-repellent places.