Rick Perry, U.S. Secretary of Energy, is seen at the press during a high-level business to business energy forum at the the European Commission in Brussels, Belgium, May 2, 2019. (Xinhua/Zheng Huansong)
High-level business to business energy forum held in Brussels, Belgium
Source：Xinhua| 2019-05-02 19:34:14|Editor: Shi Yinglun
