In the chocolate production line, Helsh-Tech cam-type rotor pump is widely used, the special requirements of chocolate materials, in the production line contact with more sections, Helsh-Tech transport pump effectively solve the different process requirements of each section, so that chocolate not only maintain the original process flavor at the same time, but also solve the temperature change, common leakage, uneven operation and other problems. Chocolate material food hygiene requirements of high grade, the use of special design of mechanical seal, strict material selection, effectively prevent the end of the seal contact with the chocolate paste solidification caused by wear, increase the service life of the mechanical seal.