... 2.made in china 3.ISO9001:2008 4.delivery time:within 30 days Ultrasonic cleaning machine IndustryCleaning objectsjewelryJewelry, diamond, gold, silver ... filters,etcOptical& watch makeroptical lens, eyeglass, sunglass, metal, gold, jewelry, diamond, watch band, watch cover, watch hand, ... appliances,precision circuit boards,parts used. made in china small mirror ultrasonic cleaning machine