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As saliva samples can be obtained relatively easily and collected by patients on their own without the need for swabs, the findings signify an important step in COVID-19 testing.

As the end of the first quarter this year, Chinese banks' total assets reached 276 trillion yuan (.1 trillion), up by 7.7 percent year-on-year. The non-performing loan ratio of commercial banks stood at 1.8 percent as of the end of the first quarter, slightly higher than the ratio of 1.74 percent in 2017. The banking sector also reported net profit of 571.5 billion yuan in the first quarter, up 6.09 percent year-on-year, according to the China Banking Association.

As to track safety, head of CRSC's solely funded subsidiary - Beijing National Railway Research & Design Institute of Signal & Communication Co, Wang Hailong told China Daily Website that the quality of CRSC's products is guaranteed from the beginning of research and development to operation and maintenance, and the overall process goes through analysis and assessment in the company's laboratory.

As the "supreme court" of international trade, the Appellate Body not only has the final say on international trade disputes, but its rulings are also enforceable.

As the first intraocular lens approved by the US Food and Drug Administration, the product relies on four-focus technology and thus breaks the limitation of the traditional three-focus technology for medium-distance vision, the company said.