They are the criteria needed to determine the of a product for purposes of international trade. It is important because duties and restrictions in several cases depend upon the source of imports. Rules of origin are used: to implement measures and instruments of commercial policy such as antidumping duties and safeguard measures;, whether imported products shall receive most-favoured-nation (MFN) treatment or preferential treatment, for trade statistics; for the application of labelling and marking requirements; and for government procurement.