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Note 16 - Concentration of Customers (Tables) | 12 Months Ended
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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 | %

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