the common names are trunking, electrical distribution trunking, trunking, etc. They are made of PVC plastic and have the characteristics of insulation, arc prevention, flame retardant and self-extinguishing. They are mainly used for internal wiring of electrical equipment, and play a role in mechanical protection and electrical protection of wires laid in electrical equipment of 12V and below. After using the product, the wiring is convenient, the wiring is neat, the installation is reliable, and it is easy to find, maintain and replace the wiring.