This PVC-U four-hole pipe adopts the innovative rectangular four-channel structure design, which is specially designed to provide compact and efficient cable protection solutions for communication fiber optic cables, monitoring lines and comprehensive wiring projects. The product is optimized by anti-settlement formula, which can resist the influence of soil stress and geological changes. The electromagnetic shielding performance effectively isolates the signal interference, and the flame retardant grade reaches B1 standard, which protects the safety of electricity. The stepped interface design realizes fast positioning and installation, and the layered wire collection function supports independent management of multiple types of cables, which significantly improves construction efficiency. The inner wall is coated with silicon core to reduce cable friction, the outer wall ring-shaped reinforcement ribs to enhance compression resistance, anti-settlement to protect the long-term stability of buried, electromagnetic shielding to enhance the quality of data transmission, and layered trunking to optimize the utilization of space.PVC-U four-hole pipe through a non-toxic composite formula of the production process, in line with the safety standards for contact with drinking water, is widely used in intelligent buildings, traffic monitoring and municipal engineering.PVC-U four-hole pipe is widely used in intelligent buildings, traffic monitoring and municipal projects. With the advantages of stepped interfaces and flame-retardant grade, it continues to provide technical guarantee for the reliability and safety of modern wiring systems.