A vacuum pump is a device or gadget that USES mechanical, physical, substance or physical-chemical ways of pump air out of a container to get a vacuum.Generally speaking, vacuum pump is a device that improves, generates and maintains vacuum in a closed space simply by various means.
Regarding to the operating basic basic principle of vacuum pump, vacuum pump could be divided into two types, Small Vacuum Pump namely gas catch pump and 
gas transfer pump.It really is trusted in metallurgy, substance industry, food, electronic coating and other industries.
