China's Chongqing Municipality saw its foreign trade total 304.77 billion yuan ($47.23 billion) in the first five months of this year, customs data showed.

The figure marks a robust increase of 39.9 percent over the same period last year, according to Chongqing Customs.

Exports surged 42.6 percent to 190.04 billion yuan, while imports reached 114.73 billion yuan, up 35.6 percent year-on-year.

Chongqing's trade with major trading partners including ASEAN, the European Union and the United States respectively hit 49.55 billion yuan, 46.93 billion yuan and 44.97 billion yuan over the period, up 23.9 percent, 31.4 percent and 43.8 percent.