22 C.F.R. § 211.6
(a) Commercial processing and repackaging. Cooperating sponsors or their designees may arrange for processing commodities into different end products and for packaging or repackaging commodities prior to distribution. Commodities may be bartered, or monetized proceeds or program income may be used, to offset such costs if provided for in the Operational Plan or TA or approved by USAID or the Diplomatic Post. When commercial facilities are used for processing, packaging or repackaging, cooperating sponsors or their designees shall enter into written agreements for such services and copies of the agreements must be provided to USAID or the Diplomatic Post. Except as AID/W otherwise agrees, the executed agreements shall provide as a minimum that the party providing such services shall:
(c) Labeling. If, prior to distribution, the cooperating sponsor arranges for packaging or repackaging donated commodities, the cartons, sacks, or other containers in which the commodities are packed shall be plainly labeled with the A.I.D. emblem, and insofar as practicable, with the following information in the language of the country in which the commodities are to be distributed:
(3) Not to be sold or exchanged (where applicable).
Emblems or other identification of nongovernmental cooperating sponsors also may be added.