he cold storage is mainly used for freezing, processing and refrigeration of food, medicine and machinery. It keeps the room at a certain low temperature through manual refrigeration. The wall, floor and flat roof of the cold storage building are covered with a certain thickness of thermal insulation materials to reduce the external heat transfer of the cold storage. In order to reduce the absorption of solar radiation, the external wall surface of the cold storage is generally painted white or light color. Therefore, the cold storage building is different from the general industrial and civil buildings, and it has its own unique structure.