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High-Tech Fair 2021 kicks off in S China
来源： 时间：2021-12-28
A 3D printer at the China High-Tech Fair 2021 in Shenzhen, South China's Guangdong province, Dec 27, 2021. The fair will be held both online from Dec 27 to 31 and offline from Dec 27 to 29. [Photo/Xinhua]
