SEOUL: South Korean tech giant Samsung Electronics' operating profit dropped by more than 50 per cent year-on-year in the second quarter, its regulatory filing showed Thursday (Jul 31), as US curbs on AI chip exports to China hit sales. The company reported an operating profit of 4.7 trillion won (US$3.4 billion) for the April-June period, marking a 55 per cent decline from a year earlier, according to the filing. The company's net profit came in at 5.1 trillion won, marking a 48 per cent year-