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Just who owns the copper is a question that has kept traders and industry analysts guessing since the metal was channelled into Shanghai by the China National Nonferrous Metals Import and Export Corp ( CNIEC ) in June and July .
 China National Nonferrous Metals Import and Export Corp, CNIEC, Shanghai
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 China National Nonferrous Metals Import and Export Corp, CNIEC, Shanghai