Dear sir or madam, My name is Joy, from sinodrills company. we are a professional rock drilling tools supplier of China . The products of us have been exported to more than 66 countries all over the world. Our products include: 1. Top hammer drilling tools covering Button bits, Cross bits, chisel bit, Integral or Tapered drill rod, Extension rod, Shank adapter, Coupling sleeve, etc. 2. DTH (down the hole) drilling tools covering DTH hammer, DTH bit, Odex, etc. 3. Rotary drilling tools covering Tricone bits, Drag bits (step & chevron, 3 wings & 4 wings), etc. 4. Diamond core drilling tools covering Diamond core bits, Reaming shells, Core barrel, diamond drill rod, etc. 5. Anchor drilling tools covering Anchor bits, Anchor rods, Nut, Plate, Coupling, etc. 6. Tap hole drilling tools covering Tap hole bits and Tap hole rods, etc. 7. Rock drills covering Pneumatic breakers, Hand held rock drills, Air leg rock drills, Inter