Input-output compliance: imported components must match prescribed inputs and proportions for manufacture of exported optical fibre cable. Standard input-output norms specify component types and normative quantities for manufacture of 12 fibre single/multimode armoured optical fibre cable and require applicants to ensure imported goods are those used or required in the export product; schedules determine the permissible proportions of inputs for different resultant products and serve as the basis for compliance verification under the Foreign Trade Policy.