The People's Bank of China fixed the yuan at 6.3975 per dollar, slightly down on Thursday's 6.4010 fix.
The move almost matched yesterday's market close of 6.3982 and broke the central bank's three-day pattern of devaluing the currency, Reuters reported.
The spot market opened at 6.3990. China allows the spot rate to trade in a range of 2 percent above or below the official fix.
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