A vacuum pump is a device or gadget that USES mechanical, physical, chemical substance or physical-chemical strategies to pump air away of a container to obtain a 
vacuum.In most cases, vacuum pump is a device that improves, generates and maintains vacuum in a closed space simply by various means.
Regarding to the Small Vacuum Pump working basic theory of vacuum pump, vacuum pump can be divided into two types, namely gas capture pump and gas transfer pump.It is trusted in metallurgy, substance industry, meals, electronic coating and various other industries.
