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Foreign Operations (Details) - USD ($)	Sep. 30, 2020	Jun. 30, 2020
China
Assets	$ 19,400,000	$ 19,000,000
Net assets	16,600,000	16,200,000
Latvia
Assets	10,200,000	9,800,000
Net assets	$ 8,800,000	$ 8,200,000

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