... -pressure washes, porcelain, medical examination apparatus, tool kits, jewelry set, DVD, PCB/FPC and baby toys Our digital ultrasonic ... , excellent effect to clean personal articles such as gold and silver jewelry, necklaces, earrings, glasses, nozzles, watches, mobile, denture, experiment ... scraping. The digital ultrasonic cleaner can do the job from 3 minutes to an hours. Mini ultrasonic cleaner is ...