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Credit Facilities - Long-term loan bank (Details) - USD ($)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Line of Credit Facility [Line Items]      
Interest expense $ 841,130 $ 1,282,291 $ 667,748
Interest expense of loans - related parties $ 11,403 0 0
Chongqing Dadukou Rongxing Village & Township Bank      
Line of Credit Facility [Line Items]      
Weighted average interest rate 12.00%    
Long term bank loan $ 866,231 981,502  
Interest expense 823,551 $ 1,243,708 $ 632,160
Interest expense of loans - related parties $ 11,403