<h1>Ensure imports match declared exports: follow Foreign Trade Policy input-output ratios for trichloro-acetonitrile (Entry A2291)</h1> Standard input-output norms under the Foreign Trade Policy specify input proportions for producing trichloro-acetonitrile: 1 kg trichloro-acetonitrile requires 1.82 kg methyl trichloro-acetate and 0.71 kg phosphorus as listed (entry A2291), with the entry added by a 1999 public notice. Applicants must ensure that imported inputs correspond to those used or required in the declared export product, and that quantities imported align with the prescribed input-output ratios for manufacture.