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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Roller chain of iron/steel | $496,484 | $595,787 | $497,203 | $3,021,863 | $433,621 |
| Articulated link chain other than roller chain, of iron/steel | $676,920 | $378,216 | $569,457 | $451,269 | $535,304 |
| Parts of articulated link chain of iron/steel | | $4,593 | $441,318 | | $105,145 |
| Skid chain of iron/steel | | $158,212 | | | $38,902 |
| Stud-link chain of iron/steel | | | | | $454,716 |
| Welded link chain of iron/steel | $256,718 | $235,077 | $231,506 | $207,222 | $227,921 |
| Chain, of iron/steel, n.e.s. in 73.15 | $102,488 | $172,631 | $177,439 | $287,073 | $469,592 |
| Parts of chains (excl. articulated link chain), of iron/steel | | $148,289 | | | $54,674 |
| Total | $1,532,610 | $1,692,805 | $1,916,923 | $3,967,427 | $2,319,875 |
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