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OTHER NON-CURRENT ASSETS (Tables)
 12 Months Ended
Dec. 31, 2024
Notes and other explanatory information [abstract]  
Schedule of other non-current assets
             
   December 31, 
   2023   2024   2024 
   CNY   CNY   US$ 
             
Zimbabwe lithium deposits (i)   247,420    256,484    35,144 
Others   110    —    — 
                
Total   247,530    256,484    35,144 

 

(i) Please refer to Note 20 (b) for more details.