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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 |
| Refractory bricks, blocks, tiles & sim. refractory ceramic constructional g ... | | $6,245 | | | |
| Refractory bricks, blocks, tiles & sim. refractory ceramic constructional g ... | $7,713 | $21,800 | $127,091 | $7,449 | $21,291 |
| Total | $7,713 | $28,045 | $127,091 | $7,449 | $21,291 |
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