Preferential tariff alignment reduces duties on goods under Bangkok and Preferential Areas agreements, updating ad valorem rates. Reduction of customs duties on imports covered by the Bangkok Agreement and the Preferential Areas Agreement to align preferential rates with reductions in most favoured nation tariff levels. The Central Government directs amendments to specified prior notifications by substituting updated ad valorem rates against enumerated item entries in the tariff tables, thereby recalibrating preferential duty treatment in line with MFN rate adjustments.