<h1>Input-output norms require imported packing materials to match declared export-use and prescribed material proportions.</h1> Standard regulatory treatment of bulk tea packing materials establishes input-output norms under the Foreign Trade Policy governing which imported inputs may be used in export production and the proportions permitted for different packing components; importers must ensure imported goods conform to declared usage and quantities for the export product and match the inputs required in manufacturing the exported tea in bulk packing.