Different from normal cable trays, Large span cable tray has large supporting span with high loading capacities. Large span cable tray is assembled by pultruded FRP profiles. Large span cable trays can be divided into ladder style, channel style, perforated style with galvanized, powder coated surface to resist corrosion. They are widely used in heavy corrosive environment to lay computer cables, communication cables, underground cables, thermocouple cables and other sensitive system control cables. As for the installation, large cable trays are combined with many accessories such as corbels, hangers and other fixations.