BEIJING, Jan. 30 (Xinhua) -- China's balance of outbound direct investment (ODI) had exceeded 2.3 trillion U.S. dollars by the end of 2020, double the figure from the end of 2015, data from the Ministry of Commerce (MOC) showed.

Aerial photo taken on Sept. 24, 2020 shows containers at Dalian port in Northeast China's Liaoning Province. (File Photo: Xinhua)

In 2020, China's ODI remained relatively stable at 132.9 billion dollars with an optimized structure, the ministry said during a press conference Friday.

China's non-financial direct investment in countries along the Belt and Road reached 17.79 billion dollars last year, up 18.3 percent, the data showed.

Key industries including equipment manufacturing and information technology saw rapid increases in investment from China, MOC data showed.