Ultrasonic Cleaner (1) Lowest back-repair rate (2) Safe (3) 3L,4L,5L,6L,10L,22L,33L and big ultrasonic cleaner equipment OEM. Ultrasonic Cleaner:(1) Lowest back-repair rate(2) Safe(3) 3L,4L,5L,6L,10L,22L,33L and big ultrasonic cleaner equipment OEM.(4) 1 year warranty, 5-10 years useful time.(5) 220V-240VAC and 110V-120VAC are both no problem.(6) Different countries have different kind of plug.(7 ...