This subpart implements the duty preference and related customs provisions applicable to imported and exported goods under the United States-Colombia Trade Promotion Agreement (the CTPA) signed on November 22, 2006, and under the United States-Colombia Trade Promotion Agreement Implementation Act (the “Act”), Public Law 112-42, 125 Stat. 462 (19 U.S.C. § 3805 note). Except as otherwise specified in this subpart, the procedures and other requirements set forth in this subpart are in addition to the customs procedures and requirements of general application contained elsewhere in this chapter. Additional provisions implementing certain aspects of the CTPA and the Act are contained in Parts 24, 162, and 163 of this chapter.