CFR›Title 19›Chapter I›Part 10›Subpart I›Subject Group Tariff Preference Level ContainsSections 10.520–10.522CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 10.520 § 10.520 Filing of claim for tariff preference level. 10.521 § 10.521 Goods eligible for tariff preference level claims. 10.522 § 10.522 Submission of certificate of eligibility. Previous Rules of Origin Rules of Origin