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Accounts and Notes Receivable, Net (Details) - USD ($)
Jun. 30, 2019
Jun. 30, 2018
Receivables [Abstract]    
Accounts receivable $ 58,129,493 $ 62,610,943
Notes receivable 72,814 3,292
Less: Allowance for doubtful accounts (21,191,849) (19,291,772)
Total accounts and notes receivable, net $ 37,010,458 $ 43,322,463