... , diamond, gold, silver products,etcmachineryMoulds, precision parts, pressing parts, camera parts, bearing, hardware tools,etcelectronicsPCB board, electronic parts, TV parts ... can also be cocktails,mellow wine,automatic mixing eggs.2.Glasses,optical instruments:all optical lenses,such as varies ... ,precision circuit boards,parts used. plastic eyeglass ultrasonic cleaner with digital timer display