Input-output norms require imported inputs to match those actually used in export production, enforcing import-use parity compliance. Standard input-output norms under the Foreign Trade Policy set allowable inputs and required proportions for a dry syrup combining ampicillin and cloxacillin, listing the finished product and constituent active ingredients with quantities. A schedule requires authorities to determine permitted input proportions for each resultant product and obliges applicants to ensure that imported goods are those actually used or required in the export product, enforcing an import-use parity compliance principle.