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SUPPLEMENTAL CASH FLOW INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2018
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract] |
Supplemental Cash Flow Information | Non-cash investing and financing activities for the years ended December 31, 2018, 2017 and 2016 are presented below:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Unpaid acquisition of PPE |  |  | 307,746 |  |  |  | 299,598 |  |  |  | 47,198 |
Principal payment of financial lease (1) |  |  | 101,965 |  |  |  | 66,075 |  |  |  | 271,843 |
Leasing for PPE acquisition |  |  | - |  |  |  |  |  |  |  | 1,429,713 |
(1) | Cancelled through compensation with trade receivables with the creditor. See Note 13.

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