the design of products is sold to the public and children in reservoir core and electronic engineering curiosity, do not wake the product, a variety of model to the rod or tin, the money market and the money in the coin into the place of the child. chip circuit board, into the coin to fall, "said the child," the impact of the magnet switch on and off the circuit connection, "the city") in the song "hello, i want to in in the bank. thank you very much for your love "or '99 in order to automatically through the tears out of the device to be simple and the symbol of the high degree of commercial financial institutions, propaganda and trial products and children's toys. piggy bank with commodity value high product.
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