Low-temperature storage tanks are vertical or horizontal double-layer vacuum insulated storage vessels used for storing media such as liquid oxygen, nitrogen, argon, carbon dioxide, etc. The inner shell is made of austenitic stainless steel; the outer shell material varies by user location, with the inner and outer shell sandwich filled with insulating materials like pearlite sand or aluminum foil, thermal insulation cotton, and then vacuumed.

Liquefied Natural Gas (LNG) must be stored in low-temperature tanks, which typically consist of an inner tank and an outer tank, filled with insulating material in between. Advantages include: 1. Reinforced concrete and prestressed concrete are excellent low-temperature materials; even if the film is damaged, the low-temperature stored liquid contacting the prestressed concrete wall will not damage the outer wall; 2. Excellent durability, resistant to underground water corrosion, and does not become brittle; 3. It has good liquid tightness and good seismic performance.