<h1>Standard Input Output norms for nitrile butadiene rubber suspended; import entitlements tied to actual export composition and pro rata adjustment.</h1> Standard Input-Output Norms prescribe component quantities per metric tonne for Nitrile Butadiene Rubber with Bound Acrylonitrile content of 33 1%, listing required amounts of acrylonitrile, butadiene and other additives, and require that imported inputs match those used in the exported product. The norms are suspended by Public Notice No. 03/2024-25 and provide that variations in bound acrylonitrile content will adjust acrylonitrile and butadiene import entitlements on a pro rata basis.