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31 Other operating income (expenses), net (Tables) | 12 Months Ended
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Dec. 31, 2020
Other Operating Income Expenses Net |
Schedule of other operating income (expenses), net |
| 2020 | 2019 | 2018
Other operating income, net | 70,288 | 75,667 | 93,089
Other operating expenses | 37,368 | (94,415) | (64,498)
Other operating income (expenses), net | 107,656 | (18,748) | 28,591

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