1.Adding method, filling the low pressure end of the compressor. This method has a slower filling speed. Generally, the supplementary method is used when the refrigerant is insufficient. Operation steps: need to start the car, turn on the air conditioner, and then add refrigerant gas, the snow tank is set. 2.Fully filled, this method is safe and fast, and is suitable for the first filling of refrigerant in the refrigeration system (the refrigerant tank is inverted). 3.Operation steps: Do not turn on the air conditioner after vacuuming, and directly add liquid refrigerant from the high-pressure end (the refrigerant tank is upright). Fill the refrigerant from the low pressure side, start the engine, and turn the air conditioner (the refrigerant tank is upright). Notice: 1.Do not store empty cans in places where corrosive gas is burned or pressurized. Empty cans cannot be reused. 2.Wear glasses during surgery. If it accidentally splashes into the eyes or skin, rinse immediately with plenty of water. 3.Aim the bottom of the tank at the human body during operation. The maximum internal pressure of the container is 15 MPa. When opening the air conditioner compressor, be sure to tighten the high-pressure end of the fluorinator or do not connect it to the high-pressure to avoid high-pressure gas explosion. 5.The storage temperature should not be too high or too low, and avoid direct sunlight. 6.Put the can on the engine or radiator and avoid direct sunlight. 7.The storage temperature is lower than 40 DegreeC. 8.Don't shake the jar vigorously. 9.This product is a high-pressure liquefied gas, which should be operated by professional and technical personnel to avoid injury. Description: 1.Material: Car refrigerant 2.Capacity: about 180g Package List: 1Car Air Conditioning Refrigerant