Customs exemption amendment: substitutes a revised rate and removes two table entries under existing notification. Further amendment to Notification No. 50/2017 Customs under Customs Act and Customs Tariff Act authority omits table entries for serial numbers 25 and 102 and substitutes the column (4) entry for serial number 37 with a revised rate, referencing the principal notification of 30 June 2017 and the prior amendment of 10 April 2018.