With professional and productive factory, HAINAISEN is one of the leading China compact diamond blades manufacturers. Welcome to wholesale compact diamond blades from us, we always have cheap products to offer you. PDC CUTTERS FOR OIL/GEOLOGY DRILLING BITS PDC cutter is available in planar and non-planar interface. Unique patented geometry . PDC(polycrystalline diamond compact) drill bit is a new product after the hot-pressed and electroplated drill bit recent years.With special hith-frequency weldin techniques.PDC of high wear resistant si welded to the body as cutting edges. http://www.pdcoiltool.com