Mermaid is one of the professional manufacturers & suppliers of rock drills, rock tools, quarrying tools,stone tools, demolition and constructional tools,mining tools, , rock drilling t ool, including thread button bits, tapered button bits, chisel bits, cross bits, thread cross bits, tapered cross bits, striking bars, shank adapter, shank adaptors, thread bits, taper bits, drill rod, drill bits, rock bits, mining bits, pdc drill bits integral drill steel, tapered drill rods, thread drill rods, M-F (male-female) rods, extension rods, integral drill rods,drifter rods so on all working for drifting and tunneling, bench and production drilling.
