Plug-ins are divided into HSD and FAKRA plug-ins. Among them, foreign plug-in manufacturers mainly include Rosenberg and Tyco, and domestic manufacturers include Xinhan and Dianlian. Different brands of plug-ins have the same interface, but different manufacturers have different design concepts. Terminals, There are subtle differences in the physical structure of the jacket. Example: The terminal insertion force is different. For this reason, when plug-ins of different brands are used with each other, you need to be careful and make sure to fully verify them. Process control such as special wire terminal crimping and cable processing is closely related to product reliability, so the production and processing of special wires requires high automation equipment.