Beijing's top trade official says China and the United States have agreed to work on extending a deadline for new tariffs on each other after two days of trade talks in Stockholm.

China's top leaders have pledged to help companies slammed by higher U.S. tariffs but held back on major moves after trade talks with the U.S. this week left businesses in limbo.

U.S. and Chinese officials began a second day of talks in Stockholm on Tuesday to resolve longstanding economic disputes and step back from an escalating trade war between the world's two biggest economies.