Customs notification amendment updates tariff table entry by substituting polyphenylene oxide including modified polyphenylene oxide. Amendment substitutes, in the Table annexed to Notification No. 48/89-Customs against S. No. 1, column (2), the entry 'polyphenylene oxide including modified polyphenylene oxide', made under sub-section (1) of Section 25 of the Customs Act, 1962 as necessary in the public interest.