中聯工起大噸位起重機吊臂伸縮機構成功采用新型插銷機構

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，gaixinxingchaxiaojigoucaiyongronghuoguojiafamingzhuanlideyijianshiquanzidongdiaobishensuojishu，jiangzaijinniandexinchanpinzhongjinxingquanmianfugaiyingyong。