Suitable for centralized warehouse systems, each shelf layer allows up to four pallets of depth. Each tray is located on the same shelf floor, except for the last tray, placed above the cart for movement, driven by the running track. A storage system suitable for moderate turnover products, which can store more than two pallets of different fine products (last in, first out storage system).

Push-back racking are made up of columns, beams, tracks, pallet trucks, etc. The special track is fixed on the bearing capacity according to the set angle, and the pallet car runs on the track. The tray is nested, the incoming goods are pushed to the deep direction in turn, the outermost tray is taken when the goods are picked up, and the nearest adjacent tray automatically drops a cargo position due to gravity.