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| Chapter | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $9,731,894 | $24,749,707 | $3,631,330 | $252,230 | $20,426,371 |
| Articles of iron or steel | $1,504,047 | $6,419,819 | $22,071,643 | $54,069,134 | $95,096,360 |
| Copper and articles thereof | $285,425 | $44,613,241 | $106,088,162 | $14,934,632 | $23,560,358 |
| Nickel and articles thereof | | $6,495 | $259,119 | | |
| Aluminum and articles thereof | $1,420,042 | $118,767,431 | $120,785,456 | $60,324,871 | $324,138,397 |
| Lead and articles thereof | $181,352 | $10,642,961 | $18,940,234 | $6,498,835 | $43,328,286 |
| Zinc and articles thereof | $49,875 | $2,127,580 | $4,754,443 | $4,362,428 | $6,731,647 |
| Tin and articles thereof | | $45,232 | $2,760,375 | $478,956 | $17,883,244 |
| Other base metals; cermets; articles thereof | | $19,089,697 | $139,866 | $5,011,907 | $1,237,664 |
| Tools, implements, cutlery, spoons and forks, of base metal | $658,192 | $97,120 | $3,248,531 | $3,507,811 | $4,786,865 |
| Miscellaneous articles of base metal | $85,706 | $991,611 | $20,935,598 | $450,229 | $143,321 |
| Total | $13,916,533 | $227,550,894 | $303,614,757 | $149,891,033 | $537,332,513 |
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