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China Telecom senior vice president Liu Guiqing said the carrier would be looking to launch field trials in many Chinese major cities during 2018.

China Mobile, the country's largest telecom carrier by mobile subscribers, said in December that it is starting large-scale 5G trials and application tests in 17 cities, including Shanghai, Guangzhou and Hangzhou. China Unicom and China Telecom are also working on similar trials after the government allocated specific low and medium-frequency bands to them.

China advocates free trade and also fair trade, the premier said. Problems arising from globalization and free trade should be treated in the perspective of long-term development and solved with further reforms and adjustments. However, fundamental rules of multilateralism and free trade should not be violated, he said.

China also will work to ensure that the government plays a better role and to create better synergy between the "visible and invisible hands", Han said, adding that the country will further improve the system to foster innovation and technological progress and push the development of advanced manufacturing.

China and Europe are responsible for the construction and operation of the application system. The data obtained by satellites in orbit will be available to all participating countries.