Concessional import duty for manufacture of excisable goods: rules notified to provide short title and commencement of scheme. Central Government, exercising rulemaking authority under the Customs Act, notified the Customs (Import of Goods at Concessional Rate of Duty for Manufacture of Excisable Goods) Rules, 1996, prescribing the short title and fixing their commencement to bring into force the concessional import duty framework for goods imported for manufacture of excisable products.