This series of products can avoid the danger of liquid nitrogen release during transportation. It’s especially suitable for laboratory users who need a small amount of samples for short-term transportation, as well as other users who transport samples through airplanes of trains. The product has a liquid nitrogen adsorbent inside, which can absorb and store liquid nitrogen. Even if the container is dumped, there will be no liquid nitrogen overflow. There is also a special stainless steel mesh screen to divide the storage space and liquid nitrogen absorber, which can prevent liquid nitrogen absorber materials from mixing into the freezing storage tube.