Large span cable tray is a specialized cable laying support equipment developed for large space and large-span wiring scenarios. It is widely used in engineering scenarios without dense column support, such as large industrial plants, storage centers, venue buildings, tunnel transportation, and new energy power stations. It is also a commonly used wiring supporting product in domestic and foreign infrastructure projects. Compared to ordinary cable trays, this product optimizes the overall structural mechanics design by thickening the substrate, strengthening the side structure, and optimizing the process adjustment of stress points, effectively improving the overall bending resistance and structural stability. It can stably carry various types of power cables, communication cables, and control cables in long-distance unsupported span environments. The product uses high-quality carbon steel and stainless steel as the core raw materials, combined with various surface treatment processes such as hot-dip galvanizing, electrostatic spraying, and anti-corrosion passivation. It can adapt to complex working conditions such as humidity, dust, and mild corrosion, effectively delaying the aging and corrosion rate of the substrate. The product strictly follows industry production standards, standardized size specifications, high overall flatness, uniform stress, and is not prone to bending, deformation, and other problems under long-term load operation. It is suitable for construction methods such as large-span overhead and suspended ceiling installation. At the same time, the product is compatible with various supporting connectors and fixed brackets, with wide adaptability, which can meet the standardized wiring construction needs of various large and medium-sized projects. With stable structural performance, it effectively adapts to the wiring planning of large space buildings and reduces the construction complexity caused by dense bracket installation.