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Foreign Operations (Details) - USD ($)	Sep. 30, 2019	Jun. 30, 2019
CHINA
Assets	$ 17,400,000	$ 16,900,000
Net assets	14,900,000	14,500,000
LATVIA
Assets	9,100,000	8,200,000
Net assets	$ 8,000,000	$ 7,800,000

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