Sports balls input-output norms require specified materials, component quantities, and importer verification that inputs match exported products. The Foreign Trade Policy prescribes Standard Input-Output Norms for size-4 sports balls made of synthetic rubber (Nitrile/SBR) with cotton or polyester viscose/polyester fabric layers and butyl/latex bladders, specifying component quantities (rubber compound 130 gms 5%, fabric 0.20 sq.mtr. per layer, bladder 1.02 nos., adhesive 20 gms per layer, ink 8 gms) and noting deletions and suspension; applicants must ensure imported inputs correspond to those used or required in the export product.