The Harmonized Commodity Description and Coding System generally referred to as “Harmonized System of Nomenclature” or simply “HSN”. It is a multipurpose international product nomenclature developed by the World Customs Organization (WCO). 

It comprises of about 5,000 commodity groups; each identified by a six digit code, arranged in a legal and logical structure and is supported by well-defined rules to achieve uniform classification.

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