The processing of multi-wire semi-finished products includes ultrasonic welding or U-shaped terminal crimping. The usual operation error is to take one side of the wire-binding semi-finished product, resulting in welding errors. The single-line kanban number of the combination of wire-binding semi-finished products must be indicated in the process error-proof design. The turnover box for storing the wire-binding semi-finished products should be located and stored. There are turnover cards with identification, batch and quantity in the turnover box. According to different projects, The turnover box can be distinguished by different colors (blue, grass green, orange).