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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $367,239 | $759,701 | $768,956 | $719,077 | $322,336 | $20,535 |
| Articulated link chain other than roller chain, of iron/steel | $8,878 | $8,429 | $1,800 | $8,957 | $22,766 | $4,163 |
| Parts of articulated link chain of iron/steel | $153 | $824 | | $897 | $761 | |
| Skid chain of iron/steel | $3,080 | | | | | |
| Stud-link chain of iron/steel | | | $6,537 | $75 | | |
| Welded link chain of iron/steel | $7,595 | | $7,552 | | $4,786 | $9,353 |
| Chain, of iron/steel, n.e.s. in 73.15 | $12,945 | $22,563 | $1,670 | $10,699 | | $1,135 |
| Parts of chains (excl. articulated link chain), of iron/steel | $44 | $92 | $11,537 | $2,318 | $1,465 | |
| Total | $399,934 | $791,609 | $798,052 | $742,023 | $352,114 | $35,186 |
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