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China once had hundreds of such companies, but many failed to profit as authorities focused on electric vehicles.

China pledged to keep a close eye on the unfolding impact of the United States' tax overhaul, which was passed by the Senate on Saturday, and it called for more tax policy coordination under the global governance framework.

China now leads the world in new energy vehicles development. The Chinese leading electric bus builder and the world's largest manufacturer of rechargeable batteries BYD has mastered the core technical chain of battery, electric motor and electric controlling system in NEVs field, Du Guozhong, head of the company's media relations department, told Xinhua Thursday.

China will continue to do its best to push for the peninsula's denuclearization and secure peace and stability there, Li said.

China will continue to provide support for Djibouti's economic and social development, exchange experience on development, and encourage competitive Chinese enterprises to invest and expand businesses in Djibouti, he said.