Standard Input-Output Norms amended, updating SION entries and corrections across chemicals, electronics, engineering, plastics and miscellaneous products. The Public Notice amends the Standard Input Output Norms in the Handbook of Procedure, Vol.2 by prescribing substitutions, deletions and insertions of SION entries and correcting input quantities. Additions and corrections are set out in Annexures A-G, which add detailed product specific entries for chemicals, electronics, engineering, plastics, sports goods and miscellaneous products, specifying permitted import inputs, precise quantities and conditional notes governing eligibility.