High speed rail is a "big user of aluminum". More than 85% of the car body materials of a high-speed rail are aluminum extrusion materials. The high-speed trains with a speed of more than 200 kilometers per hour have higher requirements for lightweight, sealing and corrosion resistance, while aluminum alloy has the characteristics of light weight, high strength, corrosion resistance and strong plasticity, which makes the aluminum profile car body have absolute advantages in the application of rail vehicles. At present, the vehicles running on the high-speed railway in China are basically aluminum profile cars.

Jinlong aluminum has successfully developed and manufactured aluminum extrusion products for high-speed rail car body from 300km / h, 350km / h to 400km / h, and some products with large cross-section, such as the wide plate at the front of high-speed rail car.