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Heading 3913

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms
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3913900030

  • Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms
  • Other
  • Protein, chemically or enzymatically modified by carboxylation and/or phthalic acid addition, whether or not hydrolysed, having a weight average molecular weight (Mw) of less than 350 000

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