The pump has four specifications of 0.5", 1", 1.5", 2". It is divided into two forms of nono-block type and pulley type. It always adopts 304 stainless steel to make the spares which contact with the working fluid. It will not produce corrosion while contacting various acid and alkali solutions. It has the advantages such as small bulk, light weight, fine strength, high precision, convenient use and installation and so forth. It is fit for extracting, conveying various liquids in the pharmaceutical, chemical, food industries. It is especially suitable for the conveying thick medicine liquid with high concentration, e.g. honey, sirup, unguent etc.