You need to see the table. The low pressure of fluoride in automobile air conditioner is 1.5 ~ 2.5kg, and the high pressure is 13.5 ~ 15.5kg. The following is an introduction about freon: 1. Introduction: Freon, also known as Freon, is a registered refrigerant trademark of DuPont Company in the United States. There are differences in the definition of freon in China, which is generally defined as the general name of halogenated compounds of saturated hydrocarbons (mainly methane, ethane and propane). According to this definition, freon can be divided into four categories: CFC, HCFC and HFC. Some scholars define freon as CFC refrigerant. 2. Main uses: Freon is widely used as refrigerant, foaming agent and cleaning agent, and is widely used in household appliances, foam plastics, daily chemicals, automobiles, fire-fighting equipment and other fields.