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Companies in the sectors of mechanical engineering posted strong performance, with shares of Anhui Quanchai Engine Co Ltd surging by 2.59 percent to close at 10.31 yuan per share.

College graduates look for jobs at a hiring event on campus at Huazhong University of Science and Technology in Wuhan, Hubei province. Wuhan is offering graduates affordable housing, more easily obtained residence permits and other perks to attract talent to the city. XIONG QI / XINHUA

Competent authorities shall review foreign investors' license applications with the same conditions and procedures as those for domestic investors, unless otherwise stipulated in other laws or administrative regulations, according to the document.

Compared with traditional chemical sterilization, radiation sterilization is more efficient and environmentally friendly as it doesn't leave any chemical residues, Wang Naiyan, a nuclear physicist at the Chinese Academy of Sciences, told the magazine China Nuclear Industry. It can be used to kill cells that contain the virus, he said.

Companies across the Seattle region are asking all employees who can work from home to do so at the recommendation of public health officials. More than 160 people in Washington state have tested positive for the virus, and 22 have died from it.