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Images: 18th OVC expo in Wuhan

Updated: 2021-10-28 (chinadaily.com.cn) Weibo Weixin Qzone Facebook Twitter More

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A visitor photographs a nanometer locating system at the 18th Optics Valley of China International Optoelectronic Exposition and Forum in Wuhan, Central China's Hubei province, on Oct 27. [Photo/IC]

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