Standard Input-Output Norms govern permissible input proportions for blended socks used in export compliance and documentation.

Standard Input-Output Norms list permitted inputs for blended socks with specified kilogram-per-kilogram content caps: crimped/texturised single/double nylon/polyester yarn; dyed high bulk acrylic yarn; rubber-covered elastic yarn; and single/double crimped nylon yarn. A schedule mandates that applicants ensure imported goods are those used or required in the export product and that the determined proportions of various inputs used in manufacture govern compliance with export requirements.

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