... split 3,0.04-0.07 Natural diamond wire drawing dies ND wire drawing dies: It is formed by natural crystal which is ... easy to be extruded with high speed, and the life of drawing wire is been increased, also decrease the risks ... : platinum rhodium wire, gold wire, silver wire, copper, aluminum, molybdenum, nickel, tined, copper, tungsten, copper aluminum alloy and other nonferrous metal wire material.