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1) hand trolley should be formed a complete set with chain hoist or other lifting machines.
2). hand trolley should be fit on the bottom flange of I-beam to compose a running lifting trolley.
3).There are ball bearings are inlayed in the wheels of the plain&Geared trolley
4). The hand trolley is a lifting machine that has high efficiency in operation with small hand-pull/push force.
geared trolleys