Standard Input-Output Norms govern permissible manufacturing input proportions and require imports to match export production use.

Standard Input-Output Norms under SION C999 for Commutator specify one unit with permitted copper input (electrolytic wire / standard bar / rod) at 0.5 Kg and require applicants to ensure that imported goods are those used or required in the export product, with determination of permissible input proportions governing use in manufacture.

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