... watch band, watch cover, watch hand,etctextilespinneret plate, rubber parts, plastic molds, toy,etcothersseal, flapper, coins, pottery, bank card, IGBT, ... jade ornaments,and these parts are often complex shape,cracks addition,the tradition cleaning methods often unable to do anything, ... remove the shell,with the whole into appropriate cleaning agent(such as gasoline)tank cleaning,cleaning can get a ...