Standard input-output norms require imports to match the actual inputs used in the declared export product.

Standard input-output norms govern permitted proportions of chemical inputs in manufacturing for export; SION A3266 for Ethylene sets input-output relationships. Determination of permissible proportions fixes which inputs may be used to produce given resultant products. Applicants must ensure imported goods correspond to inputs actually used or required in the declared export product, enforcing an obligation to match imports to export usage.

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