The following are the main foreign exchange rates against Cambodian riel issued by the National Bank of Cambodia (NBC), or the central bank of the kingdom, here on Tuesday. Currency Unit Buy Sell U.S. dollar 1 4,062 4,062 Chinese yuan 1 661 668 Euro 1 5,357 5, 411 UK pound 1 6,241 6,303 HK dollar 1 524 529 Japanese yen 100 4,092 4,133.