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Note 16 - Concentration of Customers (Tables)
12 Months Ended
Jun. 30, 2022
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

For the Year Ended June 30,

 
  

2022

  

2021

 

Revenue

        

- Customer A

  40.3

%

  37.7

%

- Customer B

 

19.4

% 

9.7

%
         

Trade Account Receivables

        

- Customer A

  36.0

%

  34.7

%

- Customer B

  24.2

%

  11.8

%