... watch band, watch cover, watch hand,etctextilespinneret plate, rubber parts, plastic molds, toy,etcothersseal, flapper, coins, pottery, bank card, IGBT, ... remove the shell,with the whole into appropriate cleaning agent(such as gasoline)tank cleaning,cleaning can get a ... and other electrical appliances,precision circuit boards,parts used. plastic eyeglass ultrasonic cleaner with digital timer display