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        ??????????(PCB)?????????2013?????PCB?????2012???1.53%??????4057?????????????????????????? 
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        ???IEK?????????????????PCB?????????????????????????10.2%??2???3.4%????3????????????????????PCB??????4.1%???????????????????????4??????1.3%?

??????2013?????PCB?????2012???1.53%???????4057???
 
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?????????????PCB???????????????????????????????????????????????????PCB???2014????????
 
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