BEIJING - China's Ministry of Commerce (MOC) urged Tuesday the US government to live up to its promises on loosening restrictions over hi-tech exports to China.

At the fourth round of the China-US Strategic and Economic Dialogue, which concluded early this month, the US government pledged to relax controls on exports of hi-tech products for civilian use, encourage Chinese enterprises to apply for Validated End-User status, and reform its exports regulatory system to promote exports to China.

MOC spokesman Shen Danyang said at a Tuesday press conference that those commitments had been taken as positive signals sent by the US government, but warned, "We have not seen any concrete actions."

He said China hoped the United States could make its deeds consistent with its words.

The US government started to address the issue of restrictions on hi-tech exports to China, US President Barack Obama told Chinese President Hu Jintao during a sideline meeting in March at the Seoul Nuclear Security Summit.

In 2009, the US Department of Commerce published a draft amendment on the policies of US exports to 64 countries and regions. But it excluded China, one of the largest trading partners of the US