BEIJING - China's air transport enterprises carried a total of 7.06 million tons of air cargo in 2017, a 5.6 percent year-on-year increase, according to the China Air Transport Association (CATA).

The country has seen surging air cargo on domestic and international air routes with a 1.9 and 15 percent increase respectively, said CATA in its latest industry analysis report.

The booming air express delivery service has contributed a lot to growth of the country's air cargo transportation.

The country's air transport enterprises realized a gross operating revenue of 534.8 billion yuan ($77.14 billion) in 2017, a 16 percent year-on-year increase.