... 20 KHZ 3, Air Pressure: 4-6kg/cm2 Single Disc Ultrasonic rhinestone machine Dongguan City South Nekon Machinery Co., ... welding machines, high frequency fusing machine).Parameter of Single Disc Ultrasonic rhinestone machine Size 1000*850*2000MMVoltage 220VFrequency ... 30-40times/minAir pressure 4-6kg/cm2Weight 180KGFeatures of Single Disc Ultrasonic rhinestone machine :1. Automatic frequency tracking, ...