Equipped with large capacity heat/cold exchanger, can super-cold liquid and also effectively prevent liquid returning to compressor. Pump station liquid supply, it can be used for long distance liquid supply, simplify the system while offering a clear and easy control. Equipped with inverter, it settles the problems of requiring very large start-up power supply and start interval more than 10 mins. The Inverter type unit can be on/off at any time. It can reduce the impact to the power grid by reducing the installed power.Use environmental secondary refrigerant CO2, ODP=0, GWP=1Refrigerant: R404a, R717.Refrigeration capacity: 40KW~500KW.Application: Super low temperature cold storage, super low temperature brine system, fast frozen, etc. The evaporator side uses CO2 as secondary refrigerant. It’s non-toxic, anti=flaming and has large latent heat of evaporation. Advanced user interface and control system with 10 inch PLC color touch screen display. With multi-touch function you can easily swap, enlarge just like using your ipad. It also support remote monitoring include data checking, modifying and downloading, it brings convenient to user.