High-pressure pumps for use in oil or gas well hydraulic fracturing operations; Mechanical and hydraulic lifts; Oil-well pumping machines; Oil field equipment, namely, drilling rig mechanical handling machines and devices; Oil field equipment, namely, drilling rig mechanization machines and devices; Oilfield production machines for extracting oil from geological layers and processing hydrocarbons; Suction pumps; Valves as machine components; Well drilling machines; Wellbore fishing tools in the nature of overshots for use in the retrieval of components and equipment located in wells; Attachments for well drilling machines in the nature of overshots; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Pump control valves