It is a Variable Frequency Suction Machine. It has High suction power, is stable and concentrated. It is an Internal noise reduction system. It uses frequency conversion technology and can adjust the flow according to the chairs that are actually being used. Power is 1 unit, Maximum Pumping (L/min) is 500, Vacuum Degree (KPa) is -13, Suitable chair is 1, Noise produced (dB) is 53
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