19 CFR § 10.733
Accumulation
July 16, 2020
(a) Originating materials from the territory of a Party that are used in the production of a good in the territory of another Party will be considered to originate in the territory of that other Party.
(b) A good that is produced in the territory of one or both of the Parties by one or more producers is an originating good if the good satisfies the requirements of §10.730 of this subpart and all other applicable requirements of General Note 28, HTSUS.