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"Consumer goods account for only 15 percent of China's total trade volume, but in developed countries it's 30 to 40 percent," he said.

"China's economy will be transformed from old to new by involving innovation and supporting policies, by how structural transformation can be promoted in more places, how new technologies, industries and formats can be continuously conducted and changed in various sectors," said Zhang Yansheng, secretary-general of the academic committee of the National Development and Reform Commission.

"China welcomes the US side to participate in cooperation within the framework of the Belt and Road Initiative," said Xi.

"Chinese brands have made great strides in improving car quality and after-sales service, sometimes even outperforming certain global brands," he said, adding that many of its exported vehicles were shipped from Chongqing to the Port of Shanghai via inland river transportation.

"China's GDP data are scientific, reliable and comparable with other economies, a fact that has been recognized by major international organizations, such as the United Nations and the World Bank," Ning said.