Introduction The thermal insulation fast door designed and produced   by   Bast-a   thermal   insulation energy-saving inner fast door in the rapid cold chain  logistics  area-,   which  helps  to  save energy, reduce air convection, and reduce noise. It is simple,  reduces moving parts,  and designs heating anti-freeze device of the design of thermal insulation fast door to ensure that the product runs smoothly and effectively in a low-temperature working environment. Under the control of the dedicated system, the door body is guaranteed to operate safely and smooth- ly. It runs more than 150, 000 times a year without failure,  extending the service life of the product and reducing the replacement and maintenance costs of components.