Aluminum profiles for transportation: With the rapid development of transportation industry, people have more more strict requirements for transportation materials. Aluminum accounts for 30% of the consumption in transportation industry, mainly because of its light weight, good formability, high strength, heat resistance corrosion resistance, other characteristics, it is widely used in the manufacturing of rail vehicle bodies (such as subway, elevated railway, Inter-city rail) other rail vehicles; It is also used on the floor, connectors, cold air doors, frames of refrigerated containers.