R134a Auto Car Automotive A/C Air Conditioning Refrigerant Gas Can Replacement Features: R134a automotive air conditioning special refrigerant, purity up to 99.9%. Good cooling effect. No water and other harmful impurities, can protect the refrigeration system from corrosion. Environmental conservation. Convenient e. Speicfications: Material: Automotive refrigerant Capacity: about 200ml Package Weight: 200 / 7.06oz. Package Size: 15 x 5 x 5 cm / 5.9 x 1.96 x 1.96in. Package List: 1 x pot refrigerant Usage method Addition method, filling from the low pressure end of the compressor, this method is slow to fill, generally use the supplement method when the refrigerant is insufficient. Operation steps: need to start the car, turn on the air conditioner and then add the refrigerant gas, and the snow cans are erected. Full addition, this method is safe and fast, and is suitable for the first filling of refrigerant in the refrigeration system (refrigerant tank inverted). Operation steps: After vacuuming, do not open the air conditioner, directly add liquid refrigerant from the high pressure end (refrigerant tank upright). Fill the refrigerant from the low pressure side, start the engine, and turn on the air conditioner (refrigerant tank upright)