we are one professional manufacturer / exporter of rock drilling tools, Our main products include tricone bit(rotary bit), down the hole bits, button bits, cross bits, chisel bits, pick cutters, all steel cross bits, road picks for grader, road planning and trenching bits, drill rod, coupling sleeve, core bits, coal cutters, pick cutters, carbide tips and other rock drilling equipment, which are widely used for mining,water well and oil well,mineral exploration, geological prospecting, excavation engineering, tunneling, mining, quarrying, construction for road, highway, civil engineering.