Samsung Electronics and SK Hynix are stepping up investments in their China wafer fabs as they race to boost supply amid a tightening memory chip market driven by demand for artificial intelligence computing, underscoring China’s continued role in semiconductor production despite US restrictions.Samsung Electronics invested 465.4 billion won (US$308.8 million) in its Xian chip plant in 2025, a 67.5 per cent increase from a year earlier, according to an annual report filed with South Korea’s...