PT Sumber Alfaria Trijaya (AMRT) Tbk, operator of Alfamart convenience stores, booked net profit of Rp451 billion last year, down 16.4% from 2014 even though sales revenue grew 16.4% to Rp48.3 trillion. That means net profit margin had dropped to below 1%. Six years ago, the profit margin was above 2.5%.To subscribe please click here