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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Roller chain of iron/steel | $253,929 | $251,458 | $470,239 | $780,282 | $1,047,691 |
| Articulated link chain other than roller chain, of iron/steel | $16,236 | $289,988 | $415,568 | $153,710 | $137,637 |
| Parts of articulated link chain of iron/steel | $36,667 | $37,100 | $10,773 | $3,814 | $1,444 |
| Skid chain of iron/steel | $892 | | | | $12,532 |
| Welded link chain of iron/steel | $65,385 | $149,604 | $1,953 | $201,383 | $971,164 |
| Chain, of iron/steel, n.e.s. in 73.15 | $28,702 | $105,231 | $220,181 | $231,051 | $815,326 |
| Parts of chains (excl. articulated link chain), of iron/steel | $32,222 | $9,880 | $2,405 | $77,552 | $85,277 |
| Total | $434,033 | $843,261 | $1,121,119 | $1,447,792 | $3,071,071 |
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