<h1>Standard input-output norms require imported inputs to match declared use and prescribed proportions for export manufacture.</h1> Standard input-output norms govern imports for manufacture of Di-methyl Thio Phosphoryl Chloride, listing principal inputs-phosphorus, sulphur, methanol, and caustic soda-with specified weights per kilogram. Applicants must determine and adhere to permissible proportions of each input used in producing the export item and ensure that imported goods correspond to those actually used or required in the export product, aligning import consignments with declared manufacturing use.