AsianFin -- China’s market regulator has delayed approval of the proposed $35 billion merger between U.S. software firms Synopsys and Ansys, following Washington’s latest tightening of chip export restrictions targeting China, the Financial Timesreported Friday.

The move comes as the U.S. and China reached a tentative trade truce during talks in London this week, after earlier negotiations stalled over Beijing’s export controls on critical minerals.