| 18. | INVENTORIES |
| 12.31.2017 | 12.31.2016 | |||||||
|
Non-current |
||||||||
|
Spare parts |
216,475,015 | 178,154,305 | ||||||
|
Allowance for obsolete inventories |
(1,753,062 | ) | (2,133,062 | ) | ||||
|
Total |
214,721,953 | 176,021,243 | ||||||
|
Current |
||||||||
|
Finished products |
163,360,814 | 141,811,446 | ||||||
|
Products in progress |
536,131,353 | 611,224,018 | ||||||
|
Raw materials, materials and spare parts |
869,931,673 | 743,930,982 | ||||||
|
Inventory in transit |
514,276 | 14,824,828 | ||||||
|
Fuels |
263,852,968 | 205,297,721 | ||||||
|
Total |
1,833,791,084 | 1,717,088,995 | ||||||