<h1>Input-output norms: imported components must match components used in exported electronic products, ensuring declared proportions reflect actual manufacturing inputs.</h1> A governing compliance rule requires determination of the proportion of various inputs actually used or required for manufacture of each resultant product: applicants must ensure that goods imported under these norms are the same goods that are used or required in the export product and that declared proportions reflect actual manufacturing inputs, imposing an evidential and verification obligation.