Exemption Extensions in customs notifications extended to a later validity period for multiple specified notifications. Amendment substituting an earlier expiry date with a later expiry date in specified provisos and paragraphs of a series of identified customs exemption notifications, effected under section 25(1) of the Customs Act, 1962. Each Table entry names a principal notification and prescribes the precise textual substitution, limiting the change to the replacement of the expiry wording in the indicated clause of each listed notification.