Characterstic 1.Imports an American valley turn of compressor low noise. 2.Evaporator and the condenser the high temperature efficiency,may save above energy 30%. 3.The import high-quality module,the service life is long. 4.The import high accuracy numeral demonstrated the province electrical form temperature controls the scheduling. 5.Two groups of compressors,but theindependent employment or begins uslng together(over-30). 6.The safekeeping of security and the failure indication system is perfct. 7.Micro processing controller,easy operation(elects to install). 8.The copperpipe uses non-gas solding.