Cryotrek series is suitable for deep low temperature environment (gas phase storage, temperature below - 190 ℃) ° C) Transportation of biological samples can avoid the risk of liquid nitrogen release in the process of transportation, especially suitable for short-term air transportation such as aircraft. There are liquid nitrogen adsorbents inside, which can absorb and preserve liquid nitrogen, even if the container is dumped, there will be no liquid nitrogen overflow; In addition, stainless steel mesh screen is used to separate the storage space and liquid nitrogen absorber, so as to avoid mixing the material of liquid nitrogen absorber into the cryopreservation tube. The M-type gas phase transport tank integrates wireless temperature monitoring system to display the temperature in liquid nitrogen tank in real time, and upload the data to Kirin cloud management platform through data repeater to realize remote monitoring and alarm, so as to ensure the safety and traceability of samples during transportation.