JY-TPE7-4 is a 7 core 4 channel trailer cable, which is widely used in the signal transmission of semi-trailers and other vehicles. JY-TPE7-4 is made of oxygen-free pure copper and brand new PVC environmentally friendly rubber material. The injection-molded joint is sturdy and durable, the wire body is soft, not easy to be oxidized, the signal transmission is stable, and the anti-interference is strong.