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| Commodity | 2005 | 2006 | 2007 | 2010 |
| Roller chain of iron/steel | $21,193 | $4,591 | $2,415 | |
| Articulated link chain other than roller chain, of iron/steel | $88,181 | $11,024 | $35,126 | |
| Parts of articulated link chain of iron/steel | $52,137 | $1,778,977 | $317,132 | $295,467 |
| Skid chain of iron/steel | $1,301 | $6,462 | $1,964 | |
| Stud-link chain of iron/steel | $8,808 | $20,294 | $294,160 | $162,400 |
| Welded link chain of iron/steel | $36,802 | $631 | | |
| Chain, of iron/steel, n.e.s. in 73.15 | $166,621 | $117,090 | $87,756 | $155,467 |
| Parts of chains (excl. articulated link chain), of iron/steel | $39,930 | $45,767 | $322,483 | |
| Total | $414,973 | $1,984,836 | $1,061,036 | $613,334 |
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