Lubricity: it can lubricate the accessories of the compressor, cut resistance,  lower power
                 consumption and prolong service lifespan.
Cooling:  it can take away the heat of the operation process in time, prevent the 
                 compressor from high temperature or be burnt out.
Airtightness: refrigeration oil can seep into the sealed surfaces of the compressor
                 accessories as oil seal, can prevent the leak of refrigerant.
Reduce the compressor noise: refrigeration oil swash the inside of the machine 
                 continuously, take away the particles from abrading, cut the wear of the machine 
                 accessories.
Applicability: suit for piston compressor, dedicated to environmental HFC media-R134a.