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The 21st China Hi-Tech Fair drew crowds in Shenzhen, South China's Guangdong province, from Nov 13 to 17, 2019. [Photo/WeChat account: szchtf] |
The 21st China Hi-Tech Fair drew crowds in Shenzhen, South China's Guangdong province, from Nov 13 to 17, 2019. [Photo/WeChat account: szchtf] |