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Foreign Operations (Details) - USD ($)
Jun. 30, 2020
Jun. 30, 2019
Assets $ 47,574,918 $ 45,973,180
CHINA    
Assets 19,000,000 16,900,000
Net assets 16,200,000 14,500,000
LATVIA    
Assets 9,800,000 8,200,000
Net assets $ 8,200,000 $ 7,800,000