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Share-based payment (Tables)
 12 Months Ended
Dec. 31, 2024
Notes and other explanatory information [abstract]  
Schedule of share based payment arrangements

 

  a) For the year ended December 31, 2024 and 2023, the Group’s share-based payment arrangements was as follows:

 

Type of arrangement     Grant date   Quantity granted
(shares)		     Fair value
per unit		     Contract period     Vesting
conditions
Bonus shares     August 28,2020     720,000     US$   1.02       5 years     5 years’ service
Schedule of share based payment transactions

    Year ended
December 31, 2024		     Year ended
December 31, 2023		  
Share-based payment   $ 131,712     $ 131,712