The core advantages of Freon are high refrigeration efficiency and stable chemical properties. It is easy to vaporize and liquefy under normal temperature and pressure, and can quickly absorb and release heat during the phase change, adapting to refrigeration scenarios with different temperature requirements. According to differences in composition, common models are divided into three categories: traditional chlorine-containing Freon (such as R22), which has good refrigeration effect and low cost but strong damage to the ozone layer; hydrofluorocarbons (such as R134a, R410A), which are chlorine-free and do not damage the ozone layer, and are the current mainstream alternative models; mixed Freon (such as R407C), which combines the advantages of multiple refrigerants and is suitable for high-end refrigeration equipment.