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China Mobile, the world's largest telecom carrier by subscribers, has been devoted to developing 5G technology, and plans to launch a fully commercialized 5G network in 2020. ( The company will also begin a pre-commercial 5G service next year and deploy more than 10,000 5G base stations by 2020, according to Sha Yuejia, vice president of China Mobile.

China Railway Corp, the country's railway operator, remained the manufacturer's biggest customer, ordering 7,500 cargo cars, with the remaining 400 sold to South Korea for cement tanker cars.

China and Egypt have made tremendous progress in developing their comprehensive strategic partnership over the years under the leadership of the two countries' presidents, Yang said.

China Unicom said earlier that the core features of a smart Olympics include safety, multimedia formats, artificial intelligence technologies and energy reduction. The company was the official telecommunications service provider when the 2008 Beijing Summer Olympics was held.

China and Russia kicked off their annual joint naval exercises in the Baltic Sea on Saturday, the first of their kind for the Chinese Navy in Europe.