A warehouse cage, also called a warehouse cage bin, offers high load capacity and flexibility, and is widely used in storage and logistics. Structural features: multi-point spot welding for sturdiness; a latch structure that lets the door open even when cages are stacked, for easy access; a bent metal handle that sits naturally in hand and opens and closes easily; a spiral hinge that folds the cage flat when not in use; hinge reinforcement that strengthens the hinge; a U-channel steel bottom for load capacity; metal reinforcement for stable stacking; a special leg base that makes self-stacking steadier. Usage features: a standardized storage cage for raw materials, semi-finished and finished goods; simple operation, wide use, long life; standard sizes easy to read; loaded cages stack four high; empty cages fold flat; works with forklifts, hand pallet trucks, casters and front/back towing attachments, across transport, handling, loading/unloading and material storage. Benefits: goods inside are clear, for easy counting and picking; cages stack on top of each other for vertical storage and more warehouse capacity; pairs with forklifts for both warehouse and logistics transport.