Summary of liquid nitrogen：The boiling point of nitrogen is 77 ° K (196 ℃).Under the normal atmospheric pressure below the temperature of minus 196 degrees Celsius can form liquid nitrogen. It can get liquid nitrogen at high temperature if the pressure is added.

The purpose of the liquid nitrogen: refrigerant used as fertilizer in industrial nitrogen production .

The main parameters of Liquid nitrogen machine:

The output: 8 liters/hour, 20 liters/hour, 30 / hour, 50 litres per hour, 100 liters/hour, 300 / hour, 50 litres per hour, the largest 1000 liters/hour.