... cooler is freon refrigerating nuits,can be used for the food fresh,cokd storage and quick freezing ... positioned in equilatral triangle.2.Extermal rotor fan for low temperature,with low noise,hith effciency,and ... 4.0,6.0,8.5,10.0 for customer's choice to meet different temperature ... electric heater has been connected to the terminal box,convinent for wire connection.8.Optimized coil design,resulting ...