Warehouse cages are also called storage cages, butterfly cages, or foldable cages, with fixed holding capacity, neat stacking, and easy stocktaking built in. In Xintongnuo's actual customer cases, many factories modify standard cages for better use around the plant. Wheeled cages: with casters fitted to the bottom, cages move easily over short distances in the workshop. Add towing attachments on the left and right sides, and cages link up front-to-back, rolling in strings across smooth floors and saving labor. Cages with PVC or steel panels: suited to small parts that would otherwise fall through the mesh. Handling methods: cages move by handling equipment, commonly forklifts (counterbalance and reach types), hand pallet trucks, cage trolleys, and battery tow tractors. For efficiency, two cages may be stacked together for transport, but watch the handler's load rating and turning speed. Stacking three or more cages together for transport is strictly forbidden; it damages the cages and is unsafe.