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An employee cleans a Porsche SE 911 GT3 vehicle during the 2017 New York International Auto Show in New York, the United States. [Photo/Agencies]
An app to connect you with a personal bodyguard is expected to be released early next month.
An official at the Institute of Geology and Geophysics of the Chinese Academy of Sciences, where Liu served as director from 1989 to 1993, said Liu died in Beijing from an illness. The official didn't elaborate.
An explosion at a chemical fertilizer plant in Xinle city, North China's Hebei province, has left six dead and seven injured after it occurred on Wednesday.
Among top 500 firms, the key technologies of 402 companies were mainly developed independently, accounting for 80.4 percent of the total. The number of valid patents obtained by the top 500 firms increased by 8.46 percent in 2019, while the figure for international patents also grew significantly.
来源：资阳报