Refrigerant Recycling Machine 1Recovery,vacuum,charge,recycle&purity 2Customer service report printing 3.LCD display Refrigerant Recovery Recycling Machine X540 Function:1) Recovery,vacuum,charge,recycle&purity2) Leakage hunting3) Fully automatically operation4) Larger LCD display5) Service database6) Customer service report printing7) Drain&charge compressor oil automatically8) Nitrogen flushing ...