v3.20.2

Interest, advances and promissory notes payable (Details) - Interest Payable - USD ($) | Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | --- | ---
Interest Payable [Abstract] |  |  |  |  |
Relatives of directors | $ 3,035,643 | $ 2,876,280 | $ 2,554,655 | $ 2,255,529 |
Non-related parties | 2,595,188 | 2,488,717 | 2,281,472 | 2,051,727 |
Total | $ 5,630,831 | $ 5,364,997 | $ 4,836,127 | $ 4,307,256 | $ 3,629,913

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