Besides directly used as fuel and refrigerant, it could also be widely used in making organic synthesis materials, freezing medium, foaming agent, cleaning agent, aerosol, propellants of pesticides, and advanced lighter gas. Also it can be added to motor fuel to control volatilization, deasphalting agent in heavy oil rectification, wax sediment solvent in oil well, flush agent for secondary oil recovery, resin foaming agent, refrigerant for transforming seawater into fresh water, olefin Ziegler polymerization solvent and so on.