An AC service sation which you can do recovery, vacuu, recharge and flushing. Refill around 3KGs of refrigerant into the new machine and then you can start to do everything. Directly flush R134a into the car and it will clean the air conditioner.Two big filter driers to and one big oil separator to purify the gas. The gas after flushing can be recovered into the storage tank. Strong compressor being at 1000W to ensure strong cleaning effect.And after flushing, it can be charged out into the car ac system. Save the cost and protect the enviroment.