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BEIJING, May 17 (Xinhua) -- The central parity rate of the Chinese currency renminbi, or the yuan, weakened 171 basis points to 6.8859 against the U.S. dollar Friday, according to the China Foreign Exchange Trade System.
In China's spot foreign exchange market, the yuan is allowed to rise or fall by 2 percent from the central parity rate each trading day.
The central parity rate of the yuan against the U.S. dollar is based on a weighted average of prices offered by market makers before the opening of the interbank market each business day.
