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| Commodity | 2006 | 2007 | 2008 |
| Carbides, of calcium, whether or not chemically defined | $206,565 | $330,311 | $986,884 |
| Carbides, of silicon, whether or not chemically defined | $128,161 | $129,061 | $28,553 |
| Carbides other than of carbon/silicon, whether or not chemically defined | $66,003 | $209,635 | $121,727 |
| Total | $400,729 | $669,007 | $1,137,164 |
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