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地处中国东北的黑龙江、吉林、辽宁三省,自2003年实施振兴东北地区等老工业基地战略以来,经济快
Located in northeastern China, Heilongjiang, Jilin and Liaoning provinces, since the implementation of the strategy of rejuvenating the northeast region and other old industrial bases in 2003, the economy has developed rapidly