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| Commodity | 2005 | 2007 | 2010 | 2011 |
| Radiators for central heating, non-electrically heated, & parts thereof , o ... | | | $1,944 | $2,752 |
| Radiators for central heating, non-electrically heated, & parts thereof , o ... | $655 | | $15,282 | |
| Air heaters & hot air distributors..., not electrically heated, incorp. a m ... | $7,553 | $8,518 | $19,135 | $189,142 |
| Total | $8,208 | $8,518 | $36,361 | $191,894 |
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