The serious overcapacity of domestic aluminum processing industry and aluminum plate and strip processing equipment has been one of the difficulties faced by the aluminum processing industry. For those who participated in the 12th summit, aluminum plate will be the only way out for Shanghai's aluminum freight cars. The industry also said that if you go to the aluminum industry exhibition every year, you will see that freight cars are a big market. The requirements for the whole material are certainly much lower than those for passenger cars with four doors and two covers. Moreover, most domestic enterprises with daily miscellaneous lines can produce them.