We are one supplier, specializing in exporting those rock drilling equipments.--DTH (down the hole) hammers and bits --Top hammer drilling equipment: button bit( R32, R38, T38, T45,T51), chisel bit, cross bit, tapered bit, thread bit, integral drill rod, tapered rod, extension rod, drifter rod, speed rod and mining equipments,--Rock drills: air-leg (jack-leg) rock drill, pneumatic rock drills,hand-held rock drill, open cast, open pit, surface and underground mining/quarrying, hammer tools, tunneling equipment.