China’s move has also raised concerns on whether restrictions on rare earth exports could follow, they said, pointing to how it curbed shipments 12 years ago in a dispute with Japan. China is the world’s biggest producer of rare earths, a group of metals used in EVs and military equipment. Analysts have described Monday’s move as China’s second, and so far the biggest, countermeasure in the long-running US-China tech fight, coming after it banned some key domestic industries from purchasing from US memory chipmaker Micron in May. On Wednesday, former vice-commerce minister Wei Jianguo told the China Daily newspaper that...