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v3.19.1

Deferred Government Grants (Tables) | 3 Months Ended
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Mar. 31, 2019
Deferred Government Grants [Abstract] |
Schedule of deferred government grants |
|  | December 31, |  |  | March 31, |
|  | 2018 |  |  | 2019 |
Total government grants |  | $ | 4,457,064 |  |  | $ | 4,531,107 |
Less: Current portion |  |  | (143,775 | ) |  |  | (147,352 | )
Non-current portion |  | $ | 4,313,289 |  |  | $ | 4,383,755 |

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