About the Refrigeration System : The sea water flake ice machine uses a refrigeration system to cool the evaporator. Common refrigerants are environmental friendly gas, R404a, or R507a. or others depending on the design and intended use of the machine. Ice Machine Ice Maker, Commercial Icee Machine, One Touch Ice Cube Maker, Big Ice Block Crusher Machine,Polar Ice Cube Machine. The types of Ice Produced: The product will supply to all over the world, such as Europe, America, Australia,Guyana, Guyana,Panama, Malta.With Water Filter: All OMT commercial cube ice machines have a water filter that feeds water into the machine to freeze into ice cubes.