Freezer, a low-temperature refrigerated freezing device designed to achieve a deep-freezing effect. It is often referred to as a cooler, freezer, etc. Freezers are used for a wide range of purposes, from the food industry to the medical industry and so on. According to the different use of the environment and the use of the effect requirements, the refrigeration space of the freezer cabinet from -45 ℃ to 0 ℃, each has its own zone.