Central Excise amendment updates tariff language, substituting specified product description to alter scope of prior exemption. The government amends Notification No. 102/90-Central Excises by substituting the wording '(C.5 Reformate)' with '(C5 + Reformate)', a textual change to the specified tariff description in the earlier exemption notification, effected under statutory amendment powers and confined to that literal substitution.