... to basic Kang prepared by vacuum. 2X ser 2X Series rotary vane vacuum pump technical parameterRotary vane vacuum pump 2X was used to ... of gas and access to basic Kang prepared by vacuum.2X series vacuum pump can be used alone, but also can be ... before the pump to use.Degree of vacuum can be membrane,vacuum heat treatment ,Real casting,electron tube,electric bulb ,Exhaust thermos bottle, etc ...