By Liu Kun in Wuhan and Zhou Huiying | chinadaily.com.cn | Updated: 2022-09-02 01:05 Students from Wuhan Electric Power Technical College in Hubei province display their high-efficiency sand barrier laying machine at a national mechanical innovation design competition. [Photo provided to chinadaily.com.cn] A high-efficiency sand barrier laying machine designed by a team from Wuhan Electric Power Technical College in Hubei province recently won first prize in a national mechanical innovation design competition for college students.

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