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WCO: Changes to the Compendium of HS Classification Opinions

The Compendium of Classification Opinions is an indispensable tool for accurate product classification. Keep up-to-date with the latest amendments.



What is the Harmonized System Compendium of Classification Opinions?

The World Customs Organization (WCO) is responsible for publishing the Harmonized System Compendium of Classification Opinions. This Compendium serves as a comprehensive numerical list of all the Classification Opinions adopted by the WCO under the Harmonized System headings and subheadings.


Classification Opinions are listed in chronological order under the relevant Harmonized System headings and subheadings. The Compendium is an essential tool for customs officials and traders, as it provides guidance on the classification of goods for custom purposes.


The WCO periodically revises the Compendium to reflect changes in trade practices and to address any issues that may arise. These revisions are integrated into the WCO publication in the order of the affected pages. It is crucial to stay informed about any changes to the Compendium to ensure that the correct classification is assigned to goods for customs purposes.


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