Milton-Law company in the metering pump technology has been in a leading position, also occupy a considerable domestic market share. The high-performance diaphragm pump head uses the Milton-Laws patented MARS technology (Automatic Mechanical Charge System) that combines the advantages of a variety of traditional pump heads. The high-performance diaphragm pump head eliminates the material-side disk diaphragm guard required for conventional hydraulic diaphragm heads, allowing the pump head to have both the "direct through" nature of the tubular diaphragm and the low NPSH (positive net suction pressure Head) requirements and other performance, but also effectively protect the diaphragm, to extend the life of the diaphragm, and to avoid the traditional metering pump head accuracy may change with the use of time weaknesses.