Rescission of Notification revokes a prior exemption under the Central Excise and Salt Act, restoring prior tariff regulation. The Central Government, exercising the power under sub section (1) of section 5A of the Central Excises and Salt Act, 1944, rescinds Notification No. 84/90 Central Excises dated 20 March 1990, removing the earlier notification's effect and restoring the regulatory position under the Central Excises framework.