Typically located in storage facilities, production workshops, and packaging areas, they are designed to handle material transportation tasks. At the entry and exit points of materials, there are path intersection devices, elevators, and ground conveyors, thereby forming a closed-loop conveying system within the storage, production workshops, and packaging areas, which allows for smooth access to all production locations.

All materials, parts, components, and finished products used in the production process must be placed in tray boxes with barcodes before entering the conveying line system. Under the production instructions issued by the production management system, tray boxes containing materials enter the conveying line system from the designated entry point.