(b) If the court finds that a detained or embargoed article is misbranded or a banned hazardous substance, such article shall, after entry of the decree, be destroyed at the expense of the manufacturer, distributor or owner thereof, under supervision of such inspector, and all court costs and fees, and storage and other proper expenses, shall be taxed against him of such article or his agent; provided, that when the misbranding can be corrected by proper labeling of the article, the court, after entry of the decree and after such costs, fees and expenses have been paid and a good and sufficient bond, conditioned that such article shall be so labeled, has been executed may by order direct that such article be returned to such person for such labeling under the supervision of an inspector of the commissioner. The expense of such supervision shall be paid by such manufacturer, distributor or owner. The article shall be returned to such manufacturer, distributor or owner on the representation to the court by the commissioner that the article is no longer in violation of this chapter and that the expenses of such supervision have been paid. This section shall not apply to a hazardous substance intended for export to any foreign country if it (1) is in a package branded in accordance with the specifications of the foreign purchaser, (2) is labeled in accordance with the laws of the foreign country, and (3) is labeled on the outside of the shipping package to show that it is intended for export, and (4) is so exported.