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11. Significant Geographic, Customer and Supplier Information (Details - by country) - Sales Revenue, Net [Member] | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Significant countries, net revenue percentage | 100.00% | 100.00%
U.S. and Canada [Member] |  |
Significant countries, net revenue percentage | 48.00% | 54.00%
GERMANY [Member] |  |
Significant countries, net revenue percentage | 18.00% | 22.00%
HONG KONG [Member] |  |
Significant countries, net revenue percentage | 6.00% | 1.00%
JAPAN [Member] |  |
Significant countries, net revenue percentage | 5.00% | 8.00%

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