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v3.21.1

Cost of sales and expenses by their nature (Tables) | 12 Months Ended
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Dec. 31, 2020
Expenses by nature [abstract] |
Schedule of Cost of Sales and Administration Expenses | At the years ended at December 31, 2020, 2019 and 2018, the cost of sales and administration expenses consist of the following:
| 2 0 2 0 |  | 2 0 1 9 |  | 2 0 1 8
Raw materials and consumables | $ | 16,343,140 |  | $ | 16,411,788 |  | $ | 15,565,242
Electrical energy |  | 2,820,667 |  |  | 3,303,640 |  |  | 2,536,387
Ferroalloys |  | 1,617,352 |  |  | 2,137,671 |  |  | 1,973,586
Refractories |  | 629,758 |  |  | 707,214 |  |  | 613,563
Oxygen |  | 248,029 |  |  | 276,648 |  |  | 279,272
Electrodes |  | 434,265 |  |  | 1,293,096 |  |  | 1,463,091
Gas and fuels |  | 767,823 |  |  | 962,001 |  |  | 766,163
Labor |  | 1,831,225 |  |  | 2,042,433 |  |  | 3,181,556
Operation materials |  | 1,033,597 |  |  | 919,893 |  |  | 954,415
Depreciation and amortization |  | 1,452,271 |  |  | 1,108,629 |  |  | 1,112,418
Maintenance |  | 1,262,728 |  |  | 2,221,595 |  |  | 2,243,255
Other expenses |  | 2,790,197 |  |  | 319,958 |  |  | 954,379
| $ | 31,231,052 |  | $ | 31,704,566 |  | $ | 31,643,327
| 2 0 2 0 |  | 2 0 1 9 |  | 2 0 1 8
Cost of sales | $ | 29,211,724 |  | $ | 30,067,141 |  | $ | 30,563,315
Administrative expenses |  | 2,019,328 |  |  | 1,637,425 |  |  | 1,080,012
| $ | 31,231,052 |  | $ | 31,704,566 |  | $ | 31,643,327

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