The 3rd generation washing machine has unique vacuum boiling washing technology based on our series 4 diaphragm vacuum pump, which have 5 characters: Contents hide 1 Vacuum suction function 2 High temperature supported 3 Low noise 4 Oil-less structure 5 Reliable quality Vacuum suction function Max negative pressure max to -75kpa, 9L/min free flow rate, … Continue reading How our series 4 vacuum pump helps the mini smart washing machine to win the market