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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Catalysts in the form of wire cloth/grill, of platinum | | | $3,500 | | | | |
| Articles of precious metal/metal clad with precious metal, n.e.s. in Ch.71 | $110,000 | $1,168,958 | $339,007 | $650,863 | $495,908 | $466,287 | $607,085 |
| Total | $110,000 | $1,168,958 | $342,507 | $650,863 | $495,908 | $466,287 | $607,085 |
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