Crane winch trolley Lifting Capacity: 25t Lift height:40m Work duty: M6 Crane Winch trolley ,hoist Match with QD Model Double Girder Overhead Crane Working duty: A5/M5, A6/M6, A7/M7 5-300t Electric Overhead Double Girder Crane (called 5-300t Crane in the following ) suitable to work in the all kinds factory, Mines,the open air place. Loading and unloading ,Transport materials in the fix span ...