The vehicles on the Guangfo Line are made of aluminum alloy body type B cars, with a maximum speed of 80 kilometers per hour, and the entire line is equipped with 27 trains. The vehicle adopts an intelligent fire alarm system, a well-functioning passenger information system, a high-power air conditioning system, and an ergonomic seat; it adopts a micro-moving sliding door system, and the doors are fully closed with the body of the vehicle, and the airtightness is good; the door of the vehicle body adopts The large width and the clear opening of 1400 mm are not only convenient for passengers to get on and off the train, but also well meet the structural strength requirements of the car body. Our company is mainly responsible for providing aluminum alloy profiles for car body in the Guangfo Line subway project.