Retractable door (www.fsyinglong.com) mainly by the door, drive motor, slide, control system structure. Door made of stainless steel and aluminum special profiles, using the principles articulated parallelogram, scalable and flexible large travel. Using special drive motor, worm gear reducer, and has automatic clutch or manual clutch, clutch power can automatically open and close automatically when a power outage can manually open and close the manual clutch control system has a control panel, buttons, switches, and the other based on user Demand equipped with a wireless remote control device. Can be equipped with scrolling display that shows the contents of 500 words. Intelligent dual probe can be equipped with an infrared anti-collision device, or foreign bodies in 20-30CM automatically return run, in order to protect the safety of vehicles and pedestrians.