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Section VII — Plastics and articles thereof; rubber and articles thereof

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.

Common commodities
Alginic acid powderHardened gelatin granulesChlorinated rubber pasteRubber hydrochloride flakesDextran irregular blocksGlycogen crystalline powderLinoxyn flakesChitosan liquid formXanthan gum in primary formNatural polymers in granule form

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