Standard Input-Output Norms define permitted input categories and proportional limits for coil spring expander exports, requiring import-use verification.

Standard Input-Output Norms prescribe admissible input categories and proportionate contributions for manufacturing the Coil spring Expander for Piston Ring (Round) (C402). Specified inputs include Spring Steel Wire with a defined weight-to-export-content ratio, Surface Activation/Cleaning Chemicals allowable up to a fraction of FOB value, and miscellaneous tooling items allowable up to a fraction of FOB value. The schedules require determination of input proportions and impose an applicant obligation to ensure imported goods are those used in the export product.

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