Siemens, Synopsys and Cadence said the U.S. has lifted export controls restricting sales and business in China.

The U.S. has eased restrictions on exports of semiconductor design software to China, according to three companies affected by the curbs. That’s giving a boost to some stocks in the sector.Shares of Synopsys and Cadence were up 3.

The administration of US President Donald Trump has lifted restrictions on exports of chip design software to China, as Washington and Beijing work to dial down hostilities as part of a recent trade agreement.