... /high impact-resistantapplication/ Engraving end mill flat bottom engraving bit Engraving Cutter Super-hard processing of professional, special, non ... CNC equipment to machine various hard-machining materials (containing Ni, Cr, Mo, Si, Ti etc.) like high temperature alloys, ... heat-resistant alloys, Ni-V-Ti alloys, cast iron, stainless steel etc., ultra excellent ...