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Five banks refused to accept four sacks of coins a woman in Chongqing wanted to deposit.
The woman, surnamed Dong, wanted to deposit 20,000 yuan in revenue she and her husband received from customers at their small plastics factory.
Dong finally deposited the money in the sixth bank on Monday after three days of trouble.
UK trade commissioner for China praised Chongqing as a burgeoning center in intelligent manufacturing.