<h1>Determination of input proportions requires importers to ensure imported goods match inputs required for export products.</h1> Determination of the proportion of various inputs governs permissible use of imported components in manufacturing export goods; applicants must ensure imported items correspond to inputs used or required in the export product. The policy entry for Converters/Choppers indicates applicable hardware inputs with an allowance for wastage and instructs net input accounting, requiring import declarations and verification that goods imported match declared export manufacturing inputs.