Lechang series of low-temperature water chiller can be divided into three series: H(high temperature), M(medium temperature), L(low temperature) which evaporating temperature is -10℃/-20℃/-50℃. Different compressors and other parts make up different series of chillers. The same compressor in different conditions is not the same, so choose the proper chillers according to the detailed requirements. In order to prevent the frozen of water , ethylene glycol needs to be added to the cooling system. The concentration of ethylene glycol can not be less than 20%(H), 30%(M), 40%(L) in order to ensure the normal operation of chillers. According to customer’s specific requirements, chillers with evaporating temperature less than -60℃ can be made.