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| Commodity | 2005 | 2006 | 2007 | 2010 | 2011 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | | | $89 | | |
| Tubes, pipes & hoses, rigid, of polymers of propylene | | | | $98 | |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | | $2 | $384 | | |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | | $3,770 | $154 | | |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $9,756 | $720 | | | $45 |
| Total | $9,756 | $4,492 | $627 | $98 | $45 |
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