3D printers; 3D printing pens; Air powered tools, namely, drills, screwdrivers, rivet hammers, saws; Air-operated power tools, namely, impact wrenches, ratchet wrenches, drills, grinders, orbital sanders; Blowing machines for the compression, exhaustion and transport of gases; Car washing and vacuuming equipment, namely, machines for washing the exterior surface of an automobile vehicle and vacuuming the interior of such vehicle, where the equipment is manually-operated by the user; Diffusers used in machines for wastewater and clean water treatment; Electrical ultrasonic cleaning units for Papermaking Machines; Parts for compressed-air tools, namely, brakes, filters, hoses, pipes, couplings valves, switches, compressors, clamping tools and injectors; Parts for pneumatic blow guns, namely, inflator tips, inflator valves, valve adapters, nozzles, nipples, couplers, connectors and pivots; Pneumatic blow guns for use in a manufacturing process to blow dust off parts, workstations or wherever necessary; Power-driven cleaning device for industrial air pollution control equipment, namely, a device that produces high intensity impulse waves that loosen collected or impacted dust and debris without damaging the equipment; Power-driven cleaning lances using explosive materials; Power-operated cleaning machines, namely, lances designed to mechanically remove scale and sludge from secondary side tubesheets in steam generators in nuclear power plants; Power-operated spray guns