Value-added industrial output rose 9. 0 per cent in July from a year earlier, slowing from a 9. 2 per cent on-year expansion in June, according to data from the National Bureau of Statistics. "Those things together always spell trouble for the copper market," Sterling Smith, a broker with Citi, said. "There's been ongoing concern about the state of the Chinese economy and a lot of people thought that they've turned a corner, but the most recent data doesn't go far in confirming that," he added.
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