... ,fancoil etc.for refrigeration ,heating ,supplying sanitany water.2.Environment-friendly Using non-polluting refrigerant,when ... can realise the heating ,cooling and supplying water,the investment and operating cost is only 1 ... traditional one.4.EfficientModular structure design ,the unit can use the standard modules for production and ... co-operation. CYWH series screw type water source heat pump unit