... constant temperature system 3.Stainless steel , durable Industrial Single trough Ultrasonic Cleaner1, Uses: Single family washing machine, use a little water, Soils as ... quality;6,40 KHZ, 68KHZ, 80KHZ, 170KHZ, 1000KHZ, better.7, single-frequency, dual-, tri-band adjustment, to meet different requirements;8 ...