<h1>Input-output norms require imported inputs to match declared use in export production, ensuring compliance under FTP.</h1> Input-output norms under the Foreign Trade Policy require determinations of permitted input proportions for manufacture of export products in SION A3548; applicants must ensure imported goods conform to those inputs and are used or required in the export product, illustrated by the Sodium Metaperiodate to crude iodine conversion example.