... ultrasonic equipment which features world leading technology. Nekon (Jewelery/ Glasses Ultrasonic washer) Machinery Co., Ltd., after 20 years of ... ,jewelrys,watch,necklace,ear ring,ring,bracelet,coin,glasses,sun glasses,nozzle of the printer,artificial teeth,comb,toothbrush ... ,jewelrys,watch,necklace,ear ring,ring,bracelet,coin,glasses,sun glasses,nozzle of the printer,artificial teeth,comb,toothbrush ...