The polymer alloy cable tray is a transformation and upgrade on the basic structure of the traditional metal cable tray, changing the single-layer structure of the metal cable tray, combining with the plastic extrusion process, using PVC, ABS, PS and other polymer resins and a variety of fine chemical additives , After plastic modification, a new type of cable bridge with the traditional metal bridge load capacity and plastic products insulation flame retardant performance, corrosion resistance and long life performance is made of special equipment and mold extrusion. The polymer alloy cable tray overcomes the working condition defects of the metal material of the traditional metal cable tray, and is extremely suitable for cable laying projects in harsh environments such as humidity, corrosive gas, static electricity, liquid, and acid-base adhesion.