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Summary of Significant Accounting Policies - Exchange rates (Details) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Euro to US Dollar |  |
Period end exchange rate | 1.05 | 1.19
Average period exchange rate | 1.13 | 1.19
Mexican Peso to US Dollar |  |
Period end exchange rate | 0.05 | 0.05
Average period exchange rate | 0.05 | 0.05

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