JZ

Powdered metallurgy, namely, hard steel * alloy * in sheet, rod, ring, pipe, grain, bar and billet form; metals, namely, metallic ceramics in the nature of cubic boron nitride and aluminium oxide in sheet, rod, ring, pipe, bar and billet form; and anti-friction metal, namely, welding tubes, rods and wires for hardfacing

Equipment for geological exploration, mining and ore separation, namely, mining rock tool bits, down-the-hole tool bits, down-the-hole drill hammer, bore tool bits in the nature of button bits, power drilling tools and parts therefor; machines, namely, power shearer picks, power coal reamer for mine operation and parts therefor; equipment for oil and gas exploitation and petroleum refining industry, namely, oil tool bits, downhole power drilling tools and parts therefor; and equipment and tools for engineering and construction in the fields of geological exploration, mining, ore separation, oil and gas exploitation, and petroleum refining and construction, namely, engineering tool bits, roller cutter boring machine, tunnel boring machine disc cutter and parts therefor