advantage：

1. The unit adopts brand semi closed screw compressor, famous brand fan and top refrigeration accessories. The evaporator adopts high efficiency shell and tube heat exchanger (stainless steel plate heat exchanger is optional), with built-in high efficiency heat exchange threaded copper tube, which has high refrigeration efficiency.
2. The models are complete, and the chilled water outlet temperature range is - 30 ℃~0 ℃, which can meet the requirements of different cooling capacity and temperature. Economizer and oil separator can be selected to further improve the cooling capacity and efficiency of compressor, and liquid injection cooling device can be selected to expand the application range of compressor.