heavy lift derrick cargo winch

Research on hydraulic structure leaking of lift crane;

起重吊车液压系统泄漏故障研究

Finite element calculation for adjustable box hoist boom and its optimal design;

伸缩式箱形起重吊臂的有限元计算和优化设计

Study on the design of automatic magnetic crane;

全自动永磁起重吊设计研究