Standard input-output norms require imports to match specified input proportions and be used in the declared export product.

Standard input-output norms set permitted input compositions and proportions for Tri cresyl phosphate production, listing cresol, phosphorus (and variants), and phosphorus oxychloride as reference inputs. Applicants importing goods must ensure those imports conform to the listed proportions and are actually used or required in the declared export product, with determination of permissible input proportions governed by the applicable schedule and the compliance verification obligation resting on the applicant.

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