... cleaning effect 4.compact structure 5.easy to operate and maintain.. Super-audio Induction Nut Foring Machine WH-VI-60:More Features: ... light weight, simple installation, easy operation.2, high efficiency, energy saving is very clear, high-frequency equipment save 60% energy ... high-pressure, very safe for the operator.4, the frequency bandwidth to meet the different parts of brazing, heat treatment, ...