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Daimler AG's electric-vehicle brand Denza 500 is displayed at an auto fair in Beijing on June 21. [Photo by Liu Jiahao/For China Daily]
Dalian University of Technology ranked seventh with 141 patent applications, up nearly three times from the previous year.
Dan Rosen
Dai Fan, representative of the US State of California and governor's special advisor on China, said as a pioneer in clean energy, carbon trading, electric vehicles and batteries, California hopes to deepen cooperation with China in these areas.
Data show that since February 2018, Beijing has opened 44 roads, totaling 123 km for road tests.
来源：资阳报