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| Commodity | 2005 | 2006 | 2007 | 2010 |
| Roller chain of iron/steel | $1,335,643 | $942,818 | $1,580,449 | $2,039,469 |
| Articulated link chain other than roller chain, of iron/steel | $6,151,210 | $7,010,857 | $7,012,188 | $8,235,210 |
| Parts of articulated link chain of iron/steel | $530,913 | $544,575 | $1,573,954 | $1,420,002 |
| Skid chain of iron/steel | $509,227 | $426,376 | $780,831 | $432,534 |
| Stud-link chain of iron/steel | $265,493 | $399,906 | $622,707 | $428,801 |
| Welded link chain of iron/steel | $559,250 | $634,503 | $858,369 | $1,265,335 |
| Chain, of iron/steel, n.e.s. in 73.15 | $5,108,049 | $3,374,345 | $3,659,275 | $2,994,670 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,144,352 | $1,378,534 | $1,704,269 | $2,173,603 |
| Total | $15,604,137 | $14,711,914 | $17,792,042 | $18,989,624 |
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