Classification, safety level and numbering method of refrigerant
Refrigerants are also called refrigerants agent in refrigeration systems. At present, there are more than 80 substances. They can be used as refrigerants. The most common refrigerants are Freon (including: R22, R134a, R407c, R410a, R32, etc.), ammonia (NH3), water (H2O), and carbon dioxide (CO2) A few hydrocarbons [...]


