19 C.F.R. § 181.121 Maintenance of confidentiality.
Title 19 - Customs Duties
The port director or other Customs officer who has possession of confidential business information collected pursuant to this part shall, in accordance with part 103 of this chapter, maintain its confidentiality and protect it from any disclosure that could prejudice the competitive position of the persons providing the information.
Title 19: Customs Duties
PART 181—NORTH AMERICAN FREE TRADE AGREEMENT
Subpart K—Confidentiality of Business Information
§ 181.121 Maintenance of confidentiality.

