The move blocks TSMC from shipping US-made tech to its facility in China.

Losing this status means each shipment requires a licence, slowing deliveries and complicating capacity expansions or upgrades.

The move blocks TSMC from shipping US-made tech to its facility in China.

TSMC’s shares slid as much as 1.3% in Taipei, while suppliers including Tokyo Electron Ltd. fell about 2%.

TSMC, along with SK Hynix and Samsung Electronics, are losing waivers that allowed them export chipmaking equipment to manufacturing plants in China.

The U.S. government has rescinded a waiver that allowed the world's largest contract chipmaker to easily export key chipmaking tech and equipment into China.