Technicians test engines to be exported to Africa at a factory of Weichai Power Co. Ltd. in Weifang City, east China's Shandong Province, Nov. 24, 2016. The Weichai Power Co. Ltd., a leading Chinese diesel engine maker, has made breakthrough in recent years in its research and development. With its sales increasing about 200 times in recent 18 years, it has been listed the 171st on the top 500 Chinese companies in 2016. (Xinhua/Fan Changguo)
