File photo taken on April 30, 2010 shows Chinese automaker BYD Chairman Wang Chuanfu (L) and then California Governor Arnold Schwarzenegger (R) during a press conference at Los Angeles City Hall to announce that BYD will locate its North American headquarters in Los Angeles, the United States. China's leading electric vehicle maker BYD held a ceremony on April 3, 2019 to celebrate its 300th bus at its Lancaster manufacturing plant in the U.S. state of California, marking a milestone for production. (Xinhua/Ringo H.W. Chiu)