... free to connect us.Ultrasonic washing machineDesign philosophyDifferent to the chemical cleaning,this machine use the ultrasonic technology for ... necklace,ear ring,ring,bracelet,coin,glasses,sun glasses,nozzle of the printer,artificial teeth,comb,toothbrush etc. ... ear ring,ring,bracelet,coin,glasses,sun glasses,nozzle of the printer,artificial teeth,comb,toothbrush etc. Ultrasonic washing machine