Electric machines and apparatus for cleaning, namely electrical ultrasonic cleaning units for clothing, vegetables, fruits, jewelry, bijouterie, spectacle frame, jewelry tools, glasses and timepieces, commodities, metal articles, dishware, stationery, gift, dental instruments like dental forceps, prosthetic materials like bridges, crowns and prostheses, injectors, operating instrument, pipet, glass container, esophagoscope, dental machinery, proctoscope, direction lens, microscope-used sample...