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Concentrations and Risks (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Jun. 30, 2018
Jun. 30, 2017
Concentration and Risks (Textual)            
Cash balance $ 34,032,952 $ 28,432,209 $ 34,032,952 $ 28,432,209 $ 31,487,053 $ 23,154,551
China [Member]            
Concentration and Risks (Textual)            
Cash balance $ 34,010,354   $ 34,010,354   $ 31,423,686  
Assets, Total [Member] | China [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     100.00% 100.00%    
Customer Five [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     10.00%      
Customer Four [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     10.00%      
Customer Four [Member] | Accounts Receivable [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     71.00%      
Vendor One [Member] | Total purchases [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage 13.00% 30.00% 38.00% 40.00%    
Vendor Two [Member] | Total purchases [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage   30.00% 14.00% 18.00%    
Vendor Three [Member] | Total purchases [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     10.00%      
Customer Three [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage     11.00% 10.00%    
Customer Two [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage 12.00%   11.00% 10.00%    
Customer One [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage   12.00% 13.00% 23.00%    
Customer One Concentration Risk [Member] | Total sales [Member]            
Concentration and Risks (Textual)            
Concentration risk, percentage   40.00%