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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 19
Chapter I
Part 181
Subpart C - Subpart C—Import Requirements
§ 181.21 - Filing of claim for preferential tariff treatment upon importation.
§ 181.22 - Maintenance of records and submission of Certificate by importer.
§ 181.23 - Effect of noncompliance; failure to provide documentation regarding transshipment.
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