Topaz series machine are multiple jib Building maintenance Unit (BMU), the construction range from medium to heavy weight, this requirement is due to building roof area or positioning of machine due to roof obstacles. it is roof mounted machine working either by traversing along the steel track or fixed at designated levels, the roof machine will include steel chassis, structure and frame, the jib, the slewing mechanism, the spreader bar slewing mechanism and the housing for the hoisting mechanism.
