KUREHA

Downhole mechanically operated tools, namely, bridge plugs, frac plugs, packers and ball sealers that are used in an oil and gas wellbore; Oil field equipment, namely, drilling rig mechanization devices in the nature of bridge plugs, frac plugs, packers and ball sealers used in an oil and gas wellbore; Rock drilling machines for downhole, and their parts and fittings sold therewith; Mining machines and apparatus and their parts and fittings

Seals; Joint packings for pipes and downhole tools used in an oil and gas wellbore; Rings of rubber for use as pipe connection seals and downhole tool; Semi-processed synthetic resins; Plastic substances, semi-processed; semi-processed plastics; Synthetic rubber; Rubber, raw or semi-worked; O-rings of rubber and plastic