WASHINGTON- U.S. President Donald Trump was upbeat on Tuesday about contacts with China as the two countries discussed a road map for the next stage of their trade talks.

"Very productive conversations going on with China! Watch for some important announcements!" Trump said in a Twitter post after a telephone call between Vice Premier Liu He and U.S. Treasury Secretary Steven Mnuchin and Trade Representative Robert Lighthizer. 

(Reporting by Doina Chiacu; Editing by Chizu Nomiyama) ((doina.chiacu@thomsonreuters.com; 202-898-8322;))