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Note 5 - Cash and Cash Equivalents (Tables)
12 Months Ended
Jun. 30, 2025
Notes Tables  
Cash, Cash Equivalent, and Investment [Table Text Block]
   

As of June 30,

 
   

2024

   

2025

 
   

US$

   

US$

 
                 

Cash and cash equivalents

    13,311       950