Ten AM50 tunneling machines, produced jointly by China's Huainan Coal-Mining Machinery Plant and Austria's Voest-Alpine AG Co., passed examination and were turned over to Chinese coal mines on March 2...
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Ten AM50 tunneling machines, produced jointly by China's Huainan Coal-Mining Machinery Plant and Austria's Voest-Alpine AG Co., passed examination and were turned over to Chinese coal mines on March 2...