What kinds of electronic harness materials are there?

Wire materials are generally composed of pvc insulation and copper wire, and special wire materials are more complicated. The actual application environment must be considered, such as high voltage, low-smoke and halogen-free, high and low temperature resistance, etc.; connectors include plastic shells and terminals,

The general plastic case material is abs or nylon material,

The terminal material is brass or phosphor copper; the sheath is divided into soft sheath and hard sheath, the soft sheath has PVC material, rubber material, silicone material, etc., and the hard sheath is the same material as the plastic case in the connector;