... to CFC-12. ODP=0, GWP=0.29 R-134a is environment-friendly refrigerant. It's the most widely used in the ... widely used in most of the fields of using R12 refrigerant.HFC-134a can be widely used for Aerosol propellant, Flame ... used for making synthesize pharmaceutical, pesticide, cosmetics, cleaning agents, etc. R-134a refrigeration