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Ultra Low Temp. Solution “Super Cool Air” SCA series Air Compression-Expansion Circulation System For Ultra Low temp. Cold Storage Refrigerant from Nature - AIR, achieving ultra-low temperature -90℃ celsius degree. "SuperCool Air" refrigeration system is getting the cooling source from nature. By compressing Air, it removes heat by compression, and expands the air, dehumidifies the air into the cold storage. Ultimate temperature achieved is "-80~-90℃"