hand-operated tools, including fastening and joint tools namely welders and make-up tongs, hand-operated tools and implements for construction and repairing namely portable drills and wenches, hand tools for cutting, grinding, sharpening, and surface treatment namely surface grinders, and hand tools for mechanical and electrical testing namely test probes
Hand ToolsMillimeter wave drilling equipment, namely gyrotrons and waveguide electromagnetic transmission lines; Mining exploration drilling equipment, namely gyrotrons and waveguide electromagnetic transmission lines; Geothermal drilling equipment, namely gyrotrons and waveguide electromagnetic transmission lines
Electrical and Scientific ApparatusConstruction of geothermal power plants; Power plant construction and operation services, namely, surface infrastructure maintenance; Power plant re-powering services
Building Construction and Repair