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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Roller chain of iron/steel | $56,265 | $55,452 | $14,789 | $74,489 | $185,455 |
| Articulated link chain other than roller chain, of iron/steel | $2,811,602 | $126,791 | $153,414 | $207,344 | $215,045 |
| Parts of articulated link chain of iron/steel | $37,125 | $19,105 | $23,325 | $50,820 | $32,323 |
| Skid chain of iron/steel | $29,325 | $1,452 | $70,931 | $31,269 | $14,042 |
| Stud-link chain of iron/steel | $1,973 | $9,254 | $55,761 | $1,706 | $385,905 |
| Welded link chain of iron/steel | $72,168 | $123,002 | $97,981 | $959,519 | $207,942 |
| Chain, of iron/steel, n.e.s. in 73.15 | $394,019 | $631,180 | $919,649 | $3,802,028 | $714,009 |
| Parts of chains (excl. articulated link chain), of iron/steel | $112,817 | $57,201 | $233,408 | $265,763 | $313,970 |
| Total | $3,515,294 | $1,023,437 | $1,569,258 | $5,392,938 | $2,068,691 |
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