... vacuum,charge it, cleanse it for rebirthing.3. Intelligent alert system with sound and light, manual oil adding, oil discharging, ... big-space software-extending function6. High effective two-stage vacuum pump, high-power semi-hermetic compressor7. Equip complete special refrigerant ... and exact in weighing10. Original, beautiful, free design of unit's shell, all-direction wheel with lock, steady in ...