<h1>Standard input-output norms require specified input proportions and verification for imports used in export manufacture.</h1> Input-Output Norms for Glycerol Ester of Gum Rosin specify permitted inputs-Gum Rosin (approx. 90% abietic acid), glycerine-and set input-to-output proportions for import authorisations. Applicants must ensure imported goods are those required and actually used in the manufacture of the export product, with the schedule serving as the control for permissible proportions and material specifications.