Cryostor series is mainly used for liquid nitrogen storage in central laboratory. It is the latest high-performance low-temperature liquid nitrogen medium storage container. By using a small amount of liquid nitrogen in the container to generate pressure, the container will automatically discharge liquid nitrogen, so as to supplement liquid nitrogen for other containers. Stainless steel material and excellent design structure can be used in the most severe environment, and improve the thermal insulation performance and reduce the evaporation loss rate. This series of products are equipped with booster valve, discharge valve, vent valve, pressure gauge and other structures, and are equipped with four moving universal wheels as standard to facilitate the use and movement of containers in different places. Among them, type a make-up tank is equipped with pressure stabilizing system and solenoid valve, which is more perfect with gas-phase liquid nitrogen tank and Zhilian liquid nitrogen tank.