The Fiber Cable Tray internal riser 45 degrees is made of the same flame-retardant PVC material as the main body of the trough, and is designed specifically for achieving a 45-degree upward turn of the optical fiber line in space. It has a compact structure and is easy to install. It can effectively guide the optical fiber line and reduce signal loss. The surface of the steering part is smooth to ensure that the optical fiber is not damaged during the turn. At the same time, the 45-degree upward bend design meets the requirements of the optical fiber bending radius and ensures stable optical fiber performance. Its flame retardant performance meets the UL94 FV-0 standard, which is safe and reliable and suitable for various optical fiber wiring scenarios such as data centers and communication rooms. Through precise calculations and rigorous testing, the 45-degree upward bend of the optical fiber trough has become an ideal choice for optical fiber line layout.