<h1>Input-output norms require imported inputs to match actual manufacturing use, ensuring export compliance under FTP channel rules.</h1> SION for engineering products under the Foreign Trade Policy prescribes channel classifications-Flexible, Drop and Rigid-and lists permitted inputs (e.g., CRCA steel sheet/coil, carbon black, rubber chemicals) with specified per unit input weights; the SION entry is noted as suspended. Applicants must determine and apply proportions of inputs required for resultant products and ensure imported goods are those actually used or required in the export product, enforcing export compliance under the FTP channel framework.