... no inflammable, explosive, toxic, not without modulates the sex without corrosion), The heat transfer performance comparison 134a R, so close ... to the refrigeration system flow easily. The heat transfer performance than 134a R R, therefore the 12 can greatly reduce the dosage of ... )0.129The critical dimension,g/cm 30.512Under the boiling point of evaporation potential,KJ/Kg215.0Quality indicator ...