2, halogen or carbon compounds, the refrigerant Freon refrigerants, they're many types, but they are methane, ethane, propane derivatives, with fluorine, chlorine and bromine atoms as opposed to hydrocarbons in all or part of the hydrogen atomic derivation. 3, azeotropic refrigerant from the perfect solution of two far more refrigerant mixture in accordance with a certain portion of refrigerant. 4, hydrocarbon refrigerant is hydrocarbon refrigerant, are
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