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Pic story: Development of China's telecom industry in 4 decades

Xinhua | Updated: 2018-11-14 14:33
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A passenger talks with her friend through a phone video call using 4G network on a bullet train from Hefei, East China's Anhui province, to Jiangshan, East China's Zhejiang province, Feb 4, 2015. [Photo/Xinhua]
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