Regular defrosting of supermarket island cabinets is important. For the direct cooling island cabinet, a large amount of frost will be formed on the inner wall after a long time of use. If it is not removed, it will affect the use effect of the cold supermarket island cabinet, and the cooling effect will also be greatly reduced. Generally, the frost layer needs to be defrosted when the frost layer reaches 5 cm. To save this trouble, you can use an air-cooled island cabinet.