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, its characteristics: it on the net natural diamond, density, texture has strict technical requirements. While the processing size, angle, arc required to undergo a rigorous testing, in order to adapt to the precision of forming grinding wheel dressing. According to provide the drawings, samples of the production, but also according to the customer 's intention or the grinding characteristics of diamond repair knife was improved and special design. And to undertake repair business.