bast rigid quick door is featured in high reliability, practicability, easy operation and low maintenance expense. Additionally bast offers the all-around after-service for two years after installation. The control system of the door adopts the DSP chip as the core to guarantee the yearly trouble-free operation over 150,000 times. The door plank is of the two-tier structure and the combined assembly mode; which can prevent from deformation and abrasion in a whole year. Both ends of the door plank are connected with the hinges by screws, and each door plank in parallel is connected by the sealing strip. Such design guarantees the good sealing performance and the simple and quick replacement of door plank. bast rigid quick door can prevent from outsider from invasion and withstand weather variations. Its quick open and closing function can separate the cross ventilation of air inside and outside. bast rigid quick door is the mostly economic choice of the busy entrance and exit.