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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Roller chain of iron/steel | $57,196 | $108,022 | $23,551 | $62,904 | $263,733 |
| Articulated link chain other than roller chain, of iron/steel | $2,144 | | | $10,935 | $13 |
| Parts of articulated link chain of iron/steel | $2,555 | $206 | | | $7,418 |
| Skid chain of iron/steel | $64 | | $536 | | |
| Stud-link chain of iron/steel | | $69 | | $7,087 | |
| Welded link chain of iron/steel | | $964 | $3,330 | $1,431 | $5,474 |
| Chain, of iron/steel, n.e.s. in 73.15 | $11,289 | $23,139 | $33,258 | $20,108 | $93,210 |
| Parts of chains (excl. articulated link chain), of iron/steel | $280,449 | $1,638 | $416,914 | $213,336 | $529 |
| Total | $353,697 | $134,038 | $477,589 | $315,801 | $370,377 |
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