Country of origin.
Country of origin. Country of origin means the country of manufacture, production, or growth of any article of foreign origin entering the United States. Further work or material added to an article in another country must effect a substantial transformation in order to render such other country the country of origin within the meaning of this part; however, for a good of a NAFTA country, the NAFTA Marking Rules will determine the country of origin.
19 CFR § 134.1
When used in this part, the following terms shall have the meaning indicated: