Visitors admire the automobile culture exhibition hall in the hydrogen energy town in Rugao, a county-level city in Nantong, East China's Jiangsu province, on May 22. A number of industry experts visited the town that day to learn about Rugao's hydrogen energy sector. Established last October, the town is currently home to nearly 20 hydrogen energy companies. [Photo/IC]

A visitor photographs a hydrogen fuel cell-powered drone on display at the exhibition hall in Rugao on May 22. [Photo/IC]