1, 28/40KHz dual frequency adjustable to meet the needs of different cleaning, clean the work piece more thoroughly.     1, the display screen uses the LED visualization liquid crystal digital display, the display is clear, at a glance.     2, automatic s

1,28/40KHz dual frequency adjustable to meet the different cleaning needs of users, so that cleaning workpiece more thorough cleaning.     1, the display screen uses the LED visualization liquid crystal digital display, the display is clear, at a glance.