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Ball mill

by ZHU GUOAN
Year of Publication 02.04.2014
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Patent

Ball milling machine

by ZHU GUOAN
Year of Publication 19.03.2014
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Patent

Feed trolley

by ZHU GUOAN
Year of Publication 23.01.2013
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Patent

Rope buckle

by ZHU GUOAN
Year of Publication 02.01.2013
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Patent