Folding structure: the side panels can be lowered or removed, and empty cages can be stacked for storage, greatly reducing floor space. It suits return transport, empty-cage storage and high-frequency turnover, significantly cutting the freight and storage cost of returning empty cages.
Stacking structure: the four corners of the cage carry stacking feet and sockets, so both empty and loaded cages can be stacked in multiple layers, giving high storage density per unit area and suiting bulk storage and three-dimensional warehouses. The stacking layers must be confirmed by per-cage load capacity and base structure—not by appearance alone.
Caster structure: industrial casters are mounted at the bottom; with a pull handle or tow hook, cages flow short distances within the workshop without relying on forklifts or pallet jacks, suiting line-side feeding and inter-process transfer. Choose caster load by the fully loaded weight and consider floor flatness.
The three structures can be combined: folding + stacking suits both return transport and storage; stacking + casters suits multi-point, multi-layer flow within the workshop; and a folding cage with casters balances storage and pushing. The combined solution is determined by handling distance, storage density and loading frequency.
When selecting, answer three questions together: how often the cargo turns over, where empty cages are kept, and what equipment handles them. Once the answers are clear, the structure naturally falls into place; then hand it to the manufacturer to calculate structure and load capacity.