The cold room is a type of refrigeration equipment. Cold room refers to the use of manual means to create an environment that is different from the outdoor temperature or humidity. It is also a constant temperature and humidity storage equipment for food, liquids, chemicals, medicine, vaccines, scientific experiments, and other items. Cold room can be divided into low-temperature , medium temperature , and high-temperature room according to the different internal temperatures; According to the volume of the cold storage, it can also be divided into movable cold storage, combined storage, large cold storage, etc; It can also be divided into types such as refrigerated storage, quick freezing room, and ripening storage according to different purposes.