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| Commodity | 2006 | 2007 | 2008 |
| Pressure-reducing valves for pipes/boiler shells/tanks/vats or the like | $24,177,321 | $87,447,825 | $57,317,928 |
| Valves for oleohydraulic/pneumatic transmissions for pipes/boiler shells/ta ... | $2,823,109 | $3,258,338 | $1,187,411 |
| Check (nonreturn) valves for pipes/boiler shells/tanks/vats or the like | $22,801,552 | $15,027,339 | $10,427,318 |
| Safety/relief valves for pipes/boiler shells/tanks/vats or the like | $23,241,244 | $51,122,276 | $235,744,756 |
| Taps, cocks, valves & sim. appls. for pipes/boiler shells/tanks/vats or the ... | $92,841,514 | $165,533,457 | $8,429,650 |
| Parts of the appls. of 84.81 | $16,952,749 | $20,681,651 | $15,693,713 |
| Total | $182,837,489 | $343,070,886 | $328,800,776 |
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