Electrical ultrasonic cleaning units for medical instruments, jewelry, watches, eyeglasses, sunglasses, contact lens cases, dentures, combs, toothbrushes, tableware, knives, tools, mechanical parts, sporting equipment, blinds, stencils, tubing, piping, and fruits and vegetables

Amplifiers; Earphones; Photocopiers; Beacons, luminous; Cabinets for loudspeakers; Computer keyboard keycaps; Computer keyboards; Computer mouse; Electric couplings; Electric navigational instruments; Floppy disc drives; Goggles for sports; Mouse mats; Punched card machines for offices; Smart watches; Tablet computers