Cold Room:Cold rooms are staples of supermarkets, meat processing plant,cold chain logistics,restaurants, hotels, and any other place that needs to store fresh, frozen, or pre-cooled food products,meat, vegetables, fruits, beverage,fish. There are 3 kinds of cold rooms that we use frequently:1-chiller room(-5~5C),2-freezer room(-15~-23C),3-blast freezer room(-40~-35C).