Selection of quality natural diamond as a raw material, through professional cutting, grinding, grinding process, the diamond processing as the special needs of the angle, curvature and geometric shape, welded on a certain specifications of the handle body, while the processing size, angle, radian after rigorous testing, in order to adapt to the precision of forming grinding wheel dressing. According to provide the drawings, samples of the production, customers can also be based on grinding characteristics of diamond repair knife was improved and special design. And to undertake repair business.