Wheat flour trade norms require packaging weight accounting and that imported inputs match those used in the export product. Standard Input-Output Norms for Wheat Flour/Atta/Suji/Maida specify packaging accounting where relevant LDPE inner and HDPE outer bags are treated at 1.01 kg per kg of the relevant bag, and require determination of permissible input proportions with an obligation on applicants to ensure imported goods are those actually used or required in the export product.