There are double-sided sealing brushes on both sides of the door frame, and the bottom is equipped with Pvc curtains. The door can be opened and closed quickly, and the opening speed can reach 0.2-1.2 m/s, which is nearly 10 times faster than ordinary steel rolling doors, and plays the role of rapid isolation. , with fast switch, heat insulation, dustproof, insectproof, soundproof and other protective functions, it is the first choice for reducing energy consumption, keeping dust-free, clean and constant, and ensuring a clean working environment.