Input-output norms require imported inputs to match declared use in export production, enforcing proportionate input determination.

Standard Input-Output norms prescribe weights and item counts for the Half Chain Cover under Engineering Products SION, with the SION entry suspended by public notice. Determination of permissible proportions of various inputs for manufacture is required, and applicants must ensure that imported goods are those used or required in the exported product, aligning import consignments with declared input proportions for production.

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