The prefabricated substation uses channel steel as the base and angle steel as the box skeleton.The box adopts a unique honeycomb structure with a double layer(composite plate)outer shell that is sturdy, insulated and ventilated, beautiful,and has a high level of protection.The outer shell materials include stainless steel,aluminum zinc coated plate,aluminum alloy,cold rolled plate,and color steel plate,and the middle is filled with flame retardant insulation material.There are various types,such as ventilated,villa, compact,etc