<h1>Input-output norms require imported copper inputs to match prescribed materials and proportions for export manufacturing compliance.</h1> Input-Output Norms under the Foreign Trade Policy prescribe acceptable input materials-copper ingot/cathode, copper strip in coil, or copper scrap-and the input quantities required to produce the specified output of copper foil; applicants must ensure imported goods correspond to materials and proportions used or required in the export product, with schedules determining permissible input mixes and verification requirements.