Input-output norms require imported inputs to match prescribed proportions and be actually used in export manufacture.

Standard input-output norms prescribe permissible input proportions for manufacturing precipitated silica and record a corresponding input reference to sodium silicate; the SION entry is suspended by public notice. Applicants must ensure imported goods match the prescribed inputs and are actually used or required in the declared export product, with authorities determining applicable input proportions and verifying compliance.

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