The Chinese currency exchange rate has not been a top concern for U.S. firms in China, Christian Murck, President of the American Chamber of Commerce in the People's Republic of China (AmCham-China), said Monday.

　　"A singleminded focus on the yuan is a mistake," Murck told reporters at the launch of the commerce chamber's annual report in Beijing.

　　He said a fluctuation in the yuan's valuation would not have major impact on U.S. firms in China but would reduce the profits of U.S. importers.

　　Murck said the best way for the U.S. government to bolster its economic growth is to boost its exports, which is more important an issue than pressing China to revalue yuan.