GB Code Changes in Ningxia Hui Autonomous Region 
 
 
Code       Name                             Year-Open  Year-End  
===============================================================
640100     Yinchuan Shi                     19820101   19921231  
640101     Yinchuan Shixiaqu                19840101   19921231  
640121     Yongning                         19820101   19921231  
640122     Helan                            19820101   19921231  
640200     Shizuishan Shi                   19820101   19921231  
640201     Shizuishan Shixiaqu              19840101   19921231  
640221     Pingluo                          19820101   19921231  
640222     Taole                            19820101   19921231  
640223     Huinong                          19870123   19921231  
642100     Yinnan Diqu                      19820101   19921231  
642101     Wuzhong Shi                      19831110   19921231  
642102     Qingtongxia Shi                  19841217   19921231  
642123     Zhongwei                         19820101   19921231  
642124     Zhongning                        19820101   19921231  
642125     Lingwu                           19820101   19921231  
642126     Yanchi                           19820101   19921231  
642127     Tongxin                          19820101   19921231  
642200     Guyuan Diqu                      19820101   19921231  
642221     Guyuan                           19820101   19921231  
642222     Haiyuan                          19820101   19921231  
642223     Xiji                             19820101   19921231  
642224     Longde                           19820101   19921231  
642225     Jingyuan                         19820101   19921231  
642226     Pengyang                         19830729   19921231  
640120     Yinchuan Shiqu                   19820101   19831231  
640220     Shizuishan Shiqu                 19820101   19831231  
640211     Shizuishan Shijiaoqu             19820101   19921231  
642121     Wuzhong                          19820101   19831109  
642122     Qingtongxia Shi                  19820101   19841216