Sales of industrial robots in China, the world's biggest market, will grow this year at only about a third the pace seen last year as an escalating Sino-U.S. trade war hits spending on equipment, a global robot group said on Thursday.

In its annual report, the International Federation of Robotics (IFR) forecast Chinese demand for robots will grow 15-20 percent this year after surging 59 percent to 137,920 units last year.

With China accounting for 36 percent of the global robot market and with its sales volume exceeding the total of Europe and the Americas combined, slowing demand growth in the Asian nation is also impacting global demand.