Input-output norms require exporters to match imported raw materials to prescribed polyurethane wheel input proportions for export compliance.

Standard input-output norms prescribe the permissible composition and input proportions for cast polyurethane wheels, listing components including polyurethane pre-polymer, curing agent, colour pigment, polyurethane-to-metal adhesive and relevant ball bearing. The norms determine proportions of inputs usable or required in manufacture and impose the operative obligation that applicants shall ensure imported goods correspond to the inputs used or required in the declared export product.

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