1. Adopting one of the current international advanced process technologies, namely "tailless vacuum" welding technology, can improve the insulation effect of the product. 2. At present, vacuum vessels are generally processed using "tail vacuum" or pressing technology, which cannot fully guarantee airtightness at the micro level. However, "tailless vacuum" uses "melting sealing technology", which means that under vacuum conditions, the vessel is controlled by a computer to complete the process of pumping, sealing, cooling, and forming. The products treated with "tailless vacuum" technology have advantages such as good insulation effect, long capacity, and service life, which have become the goal pursued by consumers and the direction of development in stainless steel vacuum vessel production technology. 3. At the same time, it has a very superior freezing effect.