Subheadings
28.36.20
Carbonates; disodium carbonate
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28.36.30
Carbonates; sodium hydrogen carbonate (sodium bicarbonate)
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28.36.40
Carbonates; potassium carbonate
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28.36.50
Carbonates; calcium carbonate
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28.36.60
Carbonates; barium carbonate
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28.36.91
Carbonates; lithium carbonate
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28.36.92
Carbonates; strontium carbonate
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28.36.99
Carbonates; n.e.c. in heading no. 2836 and other than lithium or strontium
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