Zinc aluminum magnesium trough cable tray is a new generation of high-performance enclosed wiring profiles, made of high-quality steel plates combined with zinc aluminum magnesium ternary alloy coating technology. It integrates multiple protection advantages of zinc, aluminum, and magnesium, with anti-corrosion and weather resistance far exceeding traditional galvanized cable trays. It is widely suitable for strong and weak electrical wiring projects in coastal engineering, chemical industrial parks, underground pipe galleries, wind and photovoltaic, and high humidity industrial scenes. The product has unique self-healing characteristics of the coating. Minor damage areas such as bridge cutting and drilling can generate passivation protective film independently, effectively resisting salt spray, moisture, and acid-base erosion, and providing long-term rust and oxidation prevention. The enclosed tank structure has excellent sealing performance, which can comprehensively protect internal cables, isolate dust and water vapor interference, and ensure long-term stable operation of the line. The bridge has a regular shape, stable structure, balanced load-bearing performance, complete specifications, and universal accessories. It is easy to install on site without the need for secondary anti-corrosion treatment, greatly improving construction efficiency and reducing later operation and maintenance costs. With excellent corrosion resistance and wide adaptability to various scenarios, it has become the preferred profile for mechanical and electrical wiring under harsh working conditions.