Hard quick doors have high reliability, practicality, ease of operation, and low maintenance costs, and provide comprehensive warranty services after two years of installation. The control system adopts the DSP chip of this new technology in the field of self-control as the core, ensuring that normal and fault free actions can reach more than 150000 times per year in industrial applications. The door slats are of double-layer structure and assembled in combination, so as to keep deformation and wear free all the year round. Both ends of them are connected with hinges, and each door panel is connected with a sealing strip, so as to ensure the sealing and the replacement of Flat noodles is very simple and fast, without professional maintenance personnel.