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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $529,269 | $500,040 | $659,220 | $591,650 | $1,259,933 | $365,105 |
| Articulated link chain other than roller chain, of iron/steel | $253,566 | $547,517 | $728,039 | $668,095 | $630,695 | $1,157,773 |
| Parts of articulated link chain of iron/steel | $48,779 | $171,108 | $208,638 | $100,440 | $72,037 | $119,641 |
| Skid chain of iron/steel | $141,548 | $189,142 | $439,011 | $113,700 | $100,139 | $119,624 |
| Stud-link chain of iron/steel | $15,878 | $32,900 | $68,043 | $5,544 | $45,694 | $27,783 |
| Welded link chain of iron/steel | $44,757 | $96,583 | $114,055 | $139,442 | $129,638 | $358,971 |
| Chain, of iron/steel, n.e.s. in 73.15 | $1,067,465 | $1,674,453 | $819,960 | $717,073 | $888,701 | $1,007,449 |
| Parts of chains (excl. articulated link chain), of iron/steel | $95,445 | $77,993 | $154,466 | $479,553 | $344,156 | $238,424 |
| Total | $2,196,707 | $3,289,736 | $3,191,432 | $2,815,497 | $3,470,993 | $3,394,770 |
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