Electrical ultrasonic cleaning units for jewelry, wristwatches, eye glasses, sunglasses, gold and silver jewelry, beard clippers, artificial teeth, orthopedic braces, mechanical components in the nature of machine parts, engines, carburetors, auto parts, precision parts, printed circuit boards, medical equipment, semi-conductor wafers, metal filters, chemical containers, exchangers in the nature of telecommunication exchangers, heat exchangers for chemical processing, vinyl records