The Correlation Tables between the 2012 version and the 2017 version of the Harmonized System (HS) are an essential device for preparation of new national Customs tariffs and a trade statistical classification based upon the HS Nomenclature 2017 Edition; modification of HS-based international Nomenclatures such as the Standard International Trade Classification (SITC) and the Central Product Classification (CPC); and preparations for possible WTO negotiations.
This has been excerpted from a 6 May 2015 news release by the World Customs Organization and is available in its entirety at:
http://www.wcoomd.org/en/media/newsroom/2015/may/wco-publishes-the-correlation-tables-between-the-2012-and-2017.aspx