Input-output norms require imported inputs to match prescribed production ratios, and applicants must ensure conformity for exports.

Standard FTP provisions prescribe Input-Output Norms under SION classifications; for PVC Resin (H275) the technical ratio specifies Naphtha as the requisite feedstock per unit of PVC Resin. Schedules govern determination of permissible proportions of inputs in manufacture. Applicants must ensure imported goods correspond to inputs actually used or required in the export product.

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