-Micro-pump is powered miniature DC engine drive, drive internal mechanical eccentric eccentric movement, driven by an eccentric motion inside the diaphragm reciprocates. Whereby the pump chamber fixed volume of air compression (compression suction interface is shut, the exhaust slot is produced to open slightly positive pressure), stretching (compressed exhaust slot is closed, a poor pressure Dc Vacuum Pump sucking mouth open), the pumping air flow intakes with the exterior atmospheric pressure difference, at a pressure difference, the gas pressure (suction) into the pump chamber, and 
discharged from the exhaust port.
-Micro-pump is principally used for medicine, gas analysis sampling, instrumentation and various other fields. Completely maintenance-free, and no oil pump, usually do not pollute the transmission medium.
-Small, stable and reliable, hand-kept instrument for pump-priming, low noise, low power consumption. Especially -appropriate for high harmful environmental requirements.