Industrial swing doors are hinged doors that are hinged to allow each to fold freely. It can greatly save the space occupied by the door body, so it is often used when the top of the door opening and the space on both sides are insufficient. The great flexibility of the folding door also allows it to be applied to both small holes and ultra-high and wide openings. For example, it is to small workshops such as workshops, warehouses, garages, etc., to the fields of aviation, ships, industrial enterprises, ports, and large-scale scientific research bases.