Perforated cable tray system is the choice of trunking and electrical conductor for completely enclosed wires. Most cable tray systems are made of corrosion-resistant metals (mild steel, stainless steel or aluminum alloy) or metals with corrosion-resistant coatings (zinc or epoxy). The choice of metal for any particular connection depends on the connection environment (corrosion and electrical plan) and cost. Due to the hole design, this ventilation trunking has a good ventilation effect. Compared with the cable tray, it can also achieve the effect of dust prevention and cable protection. It is a cost-effective trunking