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An employee makes final quality checks at the VW factory in Wolfsburg, Germany. [Photo/Agencies]
An investor smiles as stocks advance at a securities firm in Nanjing, Jiangsu province, on Monday. [Photo by SU YANG / FOR CHINA DAILY]
An advisory issued by the Delhi Airport said that low visibility procedures were implemented, and that there might be some flight disruptions. "Passengers are requested to contact the airline concerned for updated flight information," it added.
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.
An autonomous car heads to Beijing from Chongqing in June last year. Equipped with multiple sensors, the car fully controls its own speed, braking and steering. [Photo/Xinhua]
