40 CFR § 211.208
Export provisions
June 9, 2020
(a) The outside of each package or container containing a hearing protective device intended solely for export must be so labeled or marked. This will include all packages or containers that are used for shipping, transporting, or dispersing the hearing protective device along with any individual packaging.
(b) In addition, the manufacturer of a hearing protective device intended solely for export is subject to the export exemption requirements of §211.110-3 of subpart A.
(Sec. 10(b)(2), Pub. L. 92-574, 86 Stat. 1242 (42 U.S.C. 4909(b)(2)))