People look at solar equipment at Hannover Messe in Hannover, Germany, on April 23, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
People look at an intelligent robotic arm at Hannover Messe in Hannover, Germany, on April 22, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
People look at a self-driving shuttle bus at Hannover Messe in Hannover, Germany, on April 23, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
A visitor interacts with a robot at Hannover Messe in Hannover, Germany, on April 22, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
A visitor plays rock paper scissors with an intelligent robot at Hannover Messe in Hannover, Germany, on April 23, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
Robots transfer an item at Hannover Messe in Hannover, Germany, on April 23, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
People look at a model of hydrogen-powered plane at Hannover Messe in Hannover, Germany, on April 22, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)
A visitor looks at a bicycle made of recycled plastics at Hannover Messe in Hannover, Germany, on April 22, 2024. Hannover Messe 2024, Germany's leading industrial trade fair, kicked off on Monday with a clear emphasis on carbon-neutral production and hydrogen fuel cells. (Xinhua/Ren Pengfei)