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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% |  |  |  |

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