These pumps were originally developed by our company to maximize pumping efficiency while minimizing environmental impact. Differing from traditional pump designs, grease can be used as a lubricant in the bearing. The no-seal design effectively prevents transferred liquids from leaking and polluting the environment. The flow passage uses corrosion-resistant materials like Ni-Cr alloy, titanium alloy and stainless steel in order to avoid problems like corrosion, abrasion or cavitation. The power rate can be adjusted within 0.33-50kW according to the material being transferred. The core parts are encapsulated inside by a distance sleeve so that the material transferred will not come into direct contact with the air.