Why cleaning?    Before the vacuum process, the workpiece or material should be cleaned to remove the pollutants from their surface; it’s also very necessary of vacuum parts to do surface cleaning,because the gas and steam sources caused by the pollutants will not only make the vac...

High Vacuum Obtaining  Mechanical pump is often used to obtain low vacuum.  Mechanical pump is a device that uses mechanical methods to continuously change the volume of suction chamber in the pump and expand the volume of gas in the pumped container to obtain vacuum.  It can work direct...