-Micro-pump is powered miniature DC motor drive, drive internal mechanical eccentric eccentric motion, driven by an eccentric motion inside the diaphragm reciprocates. Whereby the pump chamber fixed level of atmosphere compression (compression suction interface is closed, the exhaust slot is shaped to open somewhat positive pressure), stretching (compressed exhaust interface is closed, a negative pressure 
sucking mouth open up), the Dc Vacuum Pump pumping air flow intakes with the exterior atmospheric pressure difference, at a pressure difference, the gas pressure (suction) in to the pump chamber, and discharged from the exhaust port.
-Micro-pump is principally used for medication, gas analysis sampling, instrumentation and various other fields. Completely maintenance-free, no oil pump, do not pollute the transmission medium.
-Small, stable and dependable, hand-held instrument for pump-priming, low noise, low power consumption. Especially -ideal for high adverse environmental requirements.
