Input output norms require matching imported manufacturing inputs to those actually used in exported optical fibre cable production.

Standard input output norms prescribe composition and permitted input proportions for manufacture of a 96 fibre unarmoured optical fibre cable, listing per kilometre weights and quantities for fibres, polymer components, water blocking materials, aramid and FRP elements, and marking tape, with numerical tolerances. Applicants must determine permissible input proportions and ensure imported goods are those actually used or required in the exported product, creating a verification obligation under the policy.

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