Foreign currency cannot be circulated within the People's Republic of China or used to determine the price and settle accounts. At present, China will accept and convert into Chinese Renminbi such foreign currencies as the US dollar, British pound, Euro, Japanese yen, Australian dollar, Austrian schilling, Belgian franc, Canadian dollar, HK dollar, Swiss franc, Danish Krone, Singapore dollar, Malaysian ringgit, Italian lira, Macao dollar, Finnish markka, and Taiwan dollar. Exchange rates are issued every day by the State Administration of Exchange Control. Before leaving China, unused Chinese Renminbi can be converted back into foreign currency with a "foreign exchange certificate" which is valid for six months.