Column sleeve pressing machine
ZHANG RUIEN, ZHANG JIANWEI, FU JIANLIANG, CAO ZHAOFENG, ZHANG JIANJUN, ZHANG RUIYA
Year of Publication 25.07.2012
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Year of Publication 25.07.2012
Patent
Frame lifting appliance with adjustable lifting center of gravity
ZHANG RUIEN, ZHANG JIANWEI, FU JIANLIANG, CAO ZHAOFENG, ZHANG JIANJUN
Year of Publication 07.09.2011
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Year of Publication 07.09.2011
Patent