BEIJING -- China's balance of outbound direct investment had exceeded $2.3 trillion by the end of 2020, double the figure from the end of 2015, data from the Ministry of Commerce showed.

In 2020, China's ODI remained relatively stable at $132.9 billion 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 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.