1. Look at the material: According to the material, the cable tray is mainly made of steel, glass steel and aluminum alloy. The fiberglass cable tray is characterized by light weight and a specific gravity of only 1/4 of carbon steel; good water resistance and corrosion resistance, Suitable for chemical plants, it is not easy to burn, the oxygen index of the flame-retardant fiberglass cable tray is ≥32, the service life is long, and the general design life is 20 years.

2. Look at the structure type: In the engineering design documents, the price of cable trays of different types and different production materials varies greatly, and the chaos of the structure type will bring about the problem of heat dissipation on the work site. Select the cable tray. In addition to looking at the scale of the manufacturer, what kind of cable bridge needs to be selected during the purchase process is appropriate.