Excise duty on dairy products set effective rates with conditional exemptions consolidated under notification, affecting milk powder, butter, cheese clearances. Prescribes an effective basic excise duty framework for dairy products by fixing ad valorem rates and consolidating specified exemptions for Chapter 4 goods. It exempts specified subheadings from duty in excess of the amount calculated at the prescribed rate, subject to entry-specific conditions, and lists skimmed milk powder, butter (including unpasteurised butter), and other dairy goods with either effective ad valorem or nil rates and conditional procedural requirements under Chapter X of the Central Excise Rules.