As part of the World Customs Organization (WCO) Comparative Study on Preferential Rules of Origin, the WCO Secretariat has conducted a study on the use of "Change of Tariff Classification (CTC)-based rules" in Product Specific Rules (PSRs) of existing Free Trade Agreements (FTAs).
The results of this study module reveal how the HS is used in origin determination, the relationship between the HS and rules of origin, and trends in rules by product category.