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Summary of Significant Accounting Policies - Schedule of Fair Value of Financial Assets Measured on Recurring Basis (Details) - USD ($) | Jun. 30, 2019 | Jul. 02, 2018 | Jun. 30, 2018 | Jun. 30, 2017
--- | --- | --- | --- | ---
Revenue in excess of billing - long term | $ 1,281,492 |  | $ 1,206,669 | $ 5,173,538
Total | 1,281,492 |  | 1,206,669 |
Level 1 [Member] |  |  |  |
Revenue in excess of billing - long term |  |  |  |
Total |  |  |  |
Level 2 [Member] |  |  |  |
Revenue in excess of billing - long term |  |  |  |
Total |  |  |  |
Level 3 [Member] |  |  |  |
Revenue in excess of billing - long term | 1,281,492 |  | 1,206,669 |
Total | $ 1,281,492 |  | $ 1,206,669 |

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