Slicer mechanical blades are mainly used for length cutting of paper, tape, film, gold, silver, copper, aluminum foil and other items. These high-grade metal foil cut needs high accuracy, no burrs and no indentation, therefore more difficulties exist. Tools for the longitudinal and cross cutting needs high precision, the least resistance, the biggest wear resistance and lasting edge sharp. In response to that problem, our company has introduced one of the most advanced CNC grinding machine and hired technical experts. After long-term research, length cutting blades have been developed to be high-precision micro-level to replace imported products. And the application of advanced technologies has made blades' suface tungsten carbide treatment. This blade, when cutting, is not easy to wear or stick powder and can reduce friction. The solution of this problem greatly increases the speed and accuracy of cut and extends the life of the tools. The development of tool successfully helps users to save a lot of costs and foreign currency.