The U.S. will delay imposing 10% tariffs on certain Chinese products until Dec. 15, the U.S. Trade Representative’s office said Tuesday. USTR said in a statement that the delay will apply to products including cell phones, laptop computers and video games. President Donald Trump has announced 10% tariffs on $300 billion in Chinese goods beginning Sept. 1, and the delay comes as officials from both sides spoke by phone. A USTR spokesman said U.S. Trade Representative Robert Lighthizer and Treasury Secretary Steven Mnuchin held discussions with Chinese Vice Premier Liu He and officials would speak again within two weeks. U.S. stocks SPX, +1.56% rose sharply following the China trade news.