HS codes are composed of 6 digits and broken down into: Chapters (first 2 digits), Headings (first 4 digits) and Subheadings (full 6 digits). The HS codes are further subdivided into 7- to 12- digit items depending on the country (also referred to as commodity codes and national tariff lines). HS codes are periodically reviewed and updated (usually once in 5 years). The latest updates took place in 2012 and in 2017. The 2017 edition of the HS classification can be found on the WCO website..
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