paragraphs of this Article, and they undertake to give effect to such principles, in respect of all
products subject to duties or other charges* or restrictions on importation and exportation based upon or
regulated in any manner by value. Moreover, they shall, upon a request by another contracting party review the
operation of any of their laws or regulations relating to value for customs purposes in the light of these
principles. The CONTRACTING PARTIES may request from contracting parties reports on steps taken by them in
pursuance of the provisions of this Article