[fuel cell costs will be reduced by more than 70% in the next five years, China's commercial vehicle market will become a key player.] the topic of hydrogen energy application in fuel cells, especially in the field of heavy trucks, has been mentioned again. Vice Minister of Science and Technology Xiang Libin said at the 2021 World New Energy vehicle Congress that the Ministry of Science and Technology will take the development of power batteries as the main direction of scientific and technological support. Among them, fuel cells in the field of heavy trucks are included.