Section 751.7 - Exports and imports(a)Exports. Persons who intend to export a chemical substance identified in any subpart under this part are subject to the export notification provisions of section 12(b) of the Act. The regulations that interpret section 12(b) appear at 40 CFR part 707, subpart D.(b)Imports. Persons who import a substance identified in any subpart under this part are subject to the import certification requirements under section 13 of the Act, which are codified at 19 CFR 12.118 through 12.127 . See also 19 CFR 127.28 .