This part, and parts 430 and 431, shall not apply to any covered product or covered equipment if:

(a) Such covered product or covered equipment is manufactured, sold, or held for sale for export from the United States or is imported for export;

(b) Such covered product or covered equipment or any container in which it is enclosed, when distributed in commerce, bears a stamp or label stating “NOT FOR SALE FOR USE IN THE UNITED STATES”; and

(c) Such product is, in fact, not distributed in commerce for use in the United States.