... gold, jewelry, diamond, watch band, watch cover, watch hand,etctextilespinneret plate, rubber parts, plastic molds, toy,etcothersseal, flapper, coins, pottery, ... used for skin care,long-term use of lubrication to keep skin young and elastic.use of V-KOOL special ultrasonic ... other electrical appliances,precision circuit boards,parts used. easy to use eyeglass ultrasonic cleaner,can be customized