Cryogenic tanks are often called cryogenic tanks or liquid nitrogen tanks. The structure is divided into two layers, the inner layer is made of austenitic stainless steel. The outer layer is made of an intermediate layer filled with insulation.
For most products, long-term storage in the refrigerator leads to product quality degradation, but for example, fruits such as bananas and oranges can be stored at 0℃ for several days, -30℃ for 1 week, and -50℃ for 2 months.
