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| Sub-Chapter | 2005 | 2006 | 2007 | 2009 | 2010 |
| Carbon | $25,807 | | $2,027 | | |
| Hydrogen, rare gases and other non-metals. | $163,965 | $224,334 | $702,010 | $492,930 | $498,658 |
| Sodium hydroxide (caustic soda); | $4,935 | $21,753 | | | |
| Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates | $181 | | | | |
| Compounds, inorganic or organic, of rare-earth metals | | | | | $1,485 |
| Carbides, whether or not chemically defined. | $16,124,337 | $12,445,583 | $18,084,224 | $21,017,602 | $30,991,024 |
| Hydrides, nitrides, azides, silicides and borides | $60,827 | | | | |
| Total | $16,380,052 | $12,691,670 | $18,788,261 | $21,510,532 | $31,491,167 |
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