Input-Output norms for EPDM tubes require specified input composition and that imported inputs match those used in exported products.

Standard input-output norms require that for 100 kg of Butyl and EPDM tubes (valve weight excluded) the inputs be Butyl Rubber 40 kg, Carbon Black 30 kg and EPDM 13 kg. The schedule mandates determination of allowable input proportions for manufacture and requires applicants to ensure imported goods correspond to the inputs actually used or required in the export product, subject to verification.

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