People visit the 18th Optics Valley of China International Optoelectronic Exposition and Forum in Wuhan, central China's Hubei Province, Oct. 27, 2021. The expo and forum opened here on Wednesday. (Photo by Wu Zhizun/Xinhua)
18th Optics Valley of China International Optoelectronic Exposition and Forum opens in Wuhan
Source: Xinhua| 2021-10-28 11:14:34|Editor: huaxia
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