Input-output norms require imported inputs to match prescribed raw material proportions for export production compliance. The schedule prescribes input proportions for Direct Black 80 (Crude), listing Beta Naphthol, Para Amino Acetanilide and 1,6 Cleaves Acid as required inputs, and mandates that applicants ensure imported inputs are those used or required in the export product, subject to verification against the prescribed input-output norms.