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v3.21.1

17. PROPERTY, PLANT AND EQUIPMENT (Details Narrative) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [abstract] |  |  |
Average annual depreciation rate | 3.14% | 3.13% | 3.72%

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