URUMQI — Northwest China's Xinjiang Uygur autonomous region registered a year-on-year growth of 9.5 percent in its foreign trade in the first four months of 2021, according to local customs.

The total import and export value of Xinjiang reached 39.01 billion yuan (about $6.06 billion) during the period, said Urumqi customs.

In April alone, the import and export volume of Xinjiang totaled 10.96 billion yuan, up 30.6 percent year-on-year and 6 percent month-on-month.

Kazakhstan remains the largest trading partner of the region, with the import and export volume reaching 22.4 billion yuan, up 13.8 percent year-on-year, accounting for 57.4 percent of Xinjiang's total foreign trade volume over the period.

The region's trade with members of the Regional Comprehensive Economic Partnership also witnessed a rapid growth momentum, noted the customs. The foreign trade with Vietnam, the Republic of Korea, Thailand and Japan grew by 106.7 percent, 196.5 percent, 121.3 percent and 45.6 percent, respectively.