The value of the yuan, or RMB, went up 50 basis points from last Friday's 7.5731 against the U.S. dollar to open for trade on Monday at 7.5681, the highest rate since the yuan was revalued by 2.1 percent from 8.28 yuan in July 2005.

It is the 51st time that the yuan's value has hit a record this year, climbing by 2,406 basis points from 7.8087 on the last trading day of 2006.

The United States complained a slow appreciation of Yuan gave Chinese exporters unfair trading advantages.

China's customs authorities said the country's monthly trade surplus hit a new high of 26.91 billion U.S. dollars in June, up 85.5 percent over the same month last year.