Lubricating system - Import export

It is mainly used to replace R22 and R502 refrigerants in low-temperature refrigeration equipment; because R290 refrigerant is flammable, it is usually only used in low-temperature refrigeration equipment with a small amount of liquid, or as a component of low-temperature mixed refrigerant; R290 is compatible with traditional refrigeration oil. High-purity R290 is used as a temperature-sensing working fluid; premium and first-grade R290 can be used as a refrigerant to replace R22, R502, compatible with the original system and lubricating oil, and used for central air conditioning, heat pump air conditioning, household air conditioning and other small refrigeration equipment . R290 is a hydrocarbon refrigerant; it has no damage to the ozone layer and has a very small greenhouse effect.