Shares of Synopsys and Cadence Design Systems jumped on Thursday after the U.S. lifted export curbs on chip design software to China, easing uncertainty around access to the crucial market.

Siemens has received notification from the US government allowing it to resume sales of chip design software to China, the German technology company said, as a trade deal between Washington and Beijing takes effect.

The White House cracked down on sales to China as part of measures responding to Beijing’s limits on shipments of essential rare earths.