Heading 3913 · Section VII

3913

Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms

Subheadings 2

• 3913.10Alginic acid, its salts and esters, in primary forms
• 3913.90In primary forms (excluding alginic acid, its salts and esters)