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A worker checks the ready-to-off-line new energy automobiles at the SAIC-GM-Wuling Automobile Co. (SGMW) in Liuzhou, south China's Guangxi Zhuang Autonomous Region, on Jan. 23, 2018.(Xinhua/Zhang Ailin)

A worker checks the ready-to-off-line new energy automobiles at the SAIC-GM-Wuling Automobile Co. (SGMW) in Liuzhou, south China's Guangxi Zhuang Autonomous Region, on Jan. 23, 2018.(Xinhua/Zhang Ailin)