SSB construction site of material hoist adopted two steel wire rope traction devices, is one of vertical transportation machinery, equipped with JT Series Speed regulation windlass as traction institutions/devices. It has enhanced speed, full-featured, high level of automation, safe and reliable features, was high security construction machinery using in carrying bricks, sand and stone decoration materials. The hoist has a wide range of security protection devices, and the safety in line with the National Construction hoist safety standards. This product can be divided by the volume of capacity into two trolleys, three trolleys and many other models.