Low maintenance crane hoist

"It can travel rotation through the trolley hanging on the I-steel, and install on the single beam crane, gantry crane, jib crane and overhang crane to rise and fall the cargos.

So it can be used in factories, mines, wharf, warehouse, freight yards, and shops and so on which need lifting equipment for lifting heavy objects. Such as mining companies and railways, docks, warehouses. It is prohibited to manned."