R507 refrigerant is an environmentally friendly refrigerant and its market demand will shrink in the future.

r502 refrigerant is a medium-temperature and medium-pressure refrigerant, but it is prone to produce ozone-destroying substances such as hcfc and cfc during use. r507 refrigerant is a substitute for r502 refrigerant and refers to a mixed refrigerant produced with 50% r125 refrigerant and 50% r143a refrigerant as raw materials. r507 refrigerant has the advantages of…