1)We use the good-quality K20,K25 raw material. 2)We have advanced welding technology. 3)Advanced CNC machine. Good-quality Carbide Rotary FileAdvantage and Application Using carbide rotary burrs is an effective way to realize mechanization in hand work operations. In the industries of airplan, ship building, automobile, machinery and chemistry, carbide rotary bur can be widely used in machining ...