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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Ion-exchangers based on polymers of 39.01-39.13, in primary forms | $26,014,138 | $29,082,055 | $27,777,823 | $31,375,973 | $28,130,909 | $27,129,790 | $38,388,907 |
| Total | $26,014,138 | $29,082,055 | $27,777,823 | $31,375,973 | $28,130,909 | $27,129,790 | $38,388,907 |
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