Search US HS Code List of 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:

HTS Code	Product Description
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:
3913100000	Alginic acid, its salts and esters
391390	Other:
3913901000	Chemical derivatives of natural rubber
39139020	Polysaccharides and their derivatives
3913902015	Xanthan gum
3913902090	Other
3913905000	Other

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