|
| Commodity | 2006 | 2007 | 2008 |
| Roller chain of iron/steel | $1,175 | $416 | |
| Articulated link chain other than roller chain, of iron/steel | $4,745 | $2,141 | $6,379 |
| Parts of articulated link chain of iron/steel | $129 | $1,348 | $351 |
| Skid chain of iron/steel | $159 | | $10 |
| Parts of chains (excl. articulated link chain), of iron/steel | $355 | $177 | $662 |
| Total | $6,563 | $4,082 | $7,402 |
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