19 CFR 10.514: Maintenance of records.

(a) General. An importer claiming preferential tariff treatment for a good imported into the United States under § 10.510(a) of this subpart must maintain, for five years after the date of importation of the good, any records and documents that the importer has relating to the origin of the good, including records and documents associated with:

(1) The purchase of, cost of, value of, and payment for, the good;

(2) Where appropriate, the purchase of, cost of, value of, and payment for, all materials, including recovered goods and indirect materials, used in the production of the good; and

(3) Where appropriate, the production of the good in the form in which the good was exported.

(b) Applicability of other recordkeeping requirements. The records and documents referred to in paragraph (a) of this section are in addition to any other records that the importer is required to prepare, maintain, or make available to CBP under part 163 of this chapter.

(c) Method of maintenance. The records and documents referred to in paragraph (a) of this section must be maintained by importers as provided in § 163.5 of this chapter.