... as the the gold ,silver,jewelry , headwear , brooch , glasses , watch chain ,pen , CD, shave palpus knife , comb , toothbrush , artificial ... . But now VGT can solve all the problems.5.Clock and watch , precision instrument: Have ultrasonic cleaner ,you shouldnt Dismount screw ... , gear wheel , hairspring spring , watch chain etc. one by one , just disboard covering, and put into the tank with the ...