Refrigerator, also known as "electric freezer" and "refrigerator", is an essential refrigeration equipment in the kitchen. Mainly used for food storage and preservation.

There are many kinds of freezers, which are divided into open (water-cooled), semi-closed (air-cooled) and fully closed (air-cooled) according to the refrigeration principle. In terms of volume, there are different specifications such as 0.5 cubic meter, 0.8 cubic meter, 1 cubic meter, 2 cubic meters and 2.5 cubic meters. There are vertical and horizontal types in the selection. Whether it is a single-door or double-door fresh-keeping cabinet or a four-door or six-door refrigerator, their refrigeration temperature can usually be adjusted between 5℃ and -20℃. The use of refrigerated cabinets should be set according to the environment and production needs. When in use, raw and cooked products, finished products and semi-finished products should be stored separately, and raw materials should be classified and stored in aluminum boxes.