The micro bulk tank is a compact jacket-type vacuum multilayer insulation (vacuum powder insulation) cryogenic pressure vessel used for storing and supplying cryogenic liquefied gases (e.g., liquid nitrogen, liquid oxygen, and liquid argon). It can store LO2, LN2, LAr, LNG, or LCO2. Its working pressure ranges from 0.5MPa to 3.0MPa, or as required. It has a geometric capacity of 1000 liters, 5000 liters, and 7000 liters.