Regarding the HD90 version counterfeit currency issue, the Shanghai headquarters of the central bank stated that by the end of October 2008, all commercial banks in Shanghai had completed the upgrade of their banknote validators at service counters. In addition, the Shanghai headquarters of the central bank also published for the first time a characteristic diagram of the HD90 version counterfeit currency. (Image source: Xinhua News Agency) Xinhua News Agency published the characteristic diagram of the HD90 counterfeit currency by the Shanghai headquarters of the central bank.