We are the <a href="https://www.hppumps.com/">Positive Displacement Pump Manufacturers</a> and Exporters of various kinds of pump and systems. They are hydrostatic working machines with a kind of liquid siphon in which the uprooting volume of the siphon is fixed for every turn of the siphon. Positive displacement pumps are fit for supporting a generally steady liquid stream rate with a given speed and independent of the release pressure. https://speakerdeck.com/hydro