Shares in major Asian computer chipmaker firms have slumped after the US announced tough new measures to restrict sales of technology to China.
The US said it will ban American firms from selling certain chips used for supercomputers and artificial intelligence to Chinese firms. The rules also target sales from non-US companies that use American equipment.
On Tuesday, shares in Taiwanese chipmaker TSMC tumbled more than 8%, Tokyo Electron in Japan fell 5.5% and South Korea's Samsung Electronics lost 1.4%.
