By Zhang Xiaomin and Wu Yong |
chinadaily.com.cn |
Updated: 2024-06-16 14:20
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An intelligent patrol robot at the dark factory of grinding and magnetic separation in Ansteel's Guanbaoshan mining company in Anshan, Liaoning province, on June 15, 2024. [Photo by Zhu Xingxin/chinadaily.com.cn]
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