19 CFR § 10.205 - Country of origin criteria.
(a) General. Except as otherwise provided in paragraph (b) of this section, an article may be eligible for duty-free treatment under the ATPA if the article is either:
(1) Wholly the growth, product, or manufacture of a beneficiary country; or
(2) A new or different article of commerce which has been grown, produced, or manufactured in a beneficiary country.
(b) Exceptions. No article shall be eligible for duty-free treatment under the ATPA by virtue of having merely undergone simple (as opposed to complex or meaningful) combining or packaging operations, or mere dilution with water or mere dilution with another substance that does not materially alter the characteristics of the article. The principles and examples set forth in § 10.195(a)(2) of this part shall apply equally for purposes of this paragraph.