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Many times we will meet the embarrassment of no change.
However, it is inconvenient to carry lots of coins with us,
so we are always unwiling to bring coins. The card that i have
designed for storing coins is for emergency use.The form of
card not only brings us lots of convenience for putting it into
our wallet,but also avoids the noise of coins knocking against
each other.The card is made of silica gel.When using the card,
we just need to separate it into two parts,Which gives us fun of