(a) Verification by Customs. A claim for preferential tariff treatment made under § 10.235, including any statements or other information contained on a Certificate of Origin submitted to Customs under § 10.236, will be subject to whatever verification the Center director deems necessary. In the event that the Center director for any reason is prevented from verifying the claim, the Center director may deny the claim for preferential tariff treatment. A verification of a claim for preferential tariff treatment may involve, but need not be limited to, a review of:

(1) All records required to be made, kept, and made available to Customs by the importer or any other person under part 163 of this chapter;

(2) Documentation and other information in a CBTPA beneficiary country regarding the country of origin of an article and its constituent materials, including, but not limited to, production records, information relating to the place of production, the number and identification of the types of machinery used in production, and the number of workers employed in production; and

(3) Evidence in a CBTPA beneficiary country to document the use of U.S. materials in the production of the article in question, such as purchase orders, invoices, bills of lading and other shipping documents, and customs import and clearance documents.

(b) Importer requirements. In order to make a claim for preferential tariff treatment under § 10.235, the importer:

(1) Must have records that explain how the importer came to the conclusion that the article qualifies for preferential tariff treatment. Those records must include documents that support a claim that the article in question qualifies for preferential tariff treatment because it meets the applicable rule of origin set forth in General Note 11, HTSUS, and in part 182, appendix A of this chapter. A properly completed Certificate of Origin in the form prescribed in § 10.236(b) is a record that would serve this purpose;