The Convention Harmonized Commodity Description and Coding System is internationally standardized system of names and numbers to classify traded products. To ensure harmonization, the contracting parties to the Convention on the Harmonized Commodity Description and Coding System, have agreed to base their national tariff schedules on the Harmonized System nomenclature and Legal Notes. Parties are permitted to subdivide the Harmonized System nomenclature beyond 6-digits and add their own Legal Notes according to their own tariff and statistical requirements.

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