Positive displacement pumps, also known as Progressive or Progressing Cavity Pumps, that consist of a rotor, similar to a corkscrew, which is sealed ...Bestpump Ltd.
Screw pump is a new type of machinery for the liquid transfer. It boasts such advantages as simple structure, safe and reliable operation, easy ...Kenshine Pump & Valve Mfg Co.Limited
The new Screw Series, are screw vacuum pumps working on an oil and water free compression principle. The screw vacuum pumps have high compatibility ...Total Vacuum Services Ltd
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