Huiyu Chang HYU brand high-quality tungsten steel carbide drill bit: Sumitomo tungsten steel material, imported Balchals coating, advanced technology processing technology, imported German five-axis grinding machine, with high precision, strong centring ability, long service life and other characteristics, suitable for processing aluminum, copper, steel, cast iron, stainless steel and other materials, Suitable for mold, automotive, aerospace, military and other fields of high hardness, high speed, efficient drilling processing, is an excellent choice to replace imported tools. Huiyuchang has imported CNC grinding machine from Germany, world-class production and processing technology, adhere to quality innovation and service, and strive to become a world-class CNC tool production and sales enterprise!