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We love the process of shopping,It's an interesting way of recreation.
When shopping some embarrassing things often occur .
To the cashier's check found that commodity prices could not afford to
pay,don't have enough money.
This kind of design is for the membership card or bank card add a thin
card sets, it’s very light.
In the shopping process, the user just rough calculation commodity price,
can avoid the embarrassment of have not enough money to pay.
shanghai normal university