Stainless steel liquid nitrogen bio-container is a large caliber liquid nitrogen container made of austenitic stainless steel. It is suitable for long-term low-temperature storage of high-value items such as stem cells, embryos, sperm, biological products, etc. With today's high vacuum multi-layer insulation technology and advanced insulation structure, it can still maintain a low liquid nitrogen loss rate while providing large-diameter operation interface. The "Serlng Safe" series of vapor-phase liquid nitrogen containers are designed for efficient low-temperature storage, featuring large storage capacity, low liquid nitrogen loss, convenient operation, sleek appearance, long service life.