... watch makeroptical lens, eyeglass, sunglass, metal, gold, jewelry, diamond, watch band, watch cover, watch hand,etctextilespinneret ... use items such as gold and silver jewelry,jewelry,hair,accessories,brooch,glasses,watch,chain,pen ... lens by ultrasonic cleaning ,etc.all the world the truth filling completely.3.Jade,jewelry processing ... circuit boards,parts used. mini ultrasonic cleaner for finger nail