<h1>Input-output norms require imported inputs to match declared use in export products and permit verification of input proportions.</h1> Input-output norms require determination and verification of proportions of inputs used in producing export products; applicants must ensure imported goods correspond to those actually required and used in the declared export product. The document lists specific chemical inputs and notes suspension of certain items, while indicating authorities will assess permissible proportions of inputs for manufacture of resultant goods.