As of December 31, | |||||
2017 | 2016 | ||||
Raw materials, materials and spare parts | 616,870 | 401,481 | |||
Goods in process | 1,251,779 | 811,378 | |||
Finished goods | 423,372 | 281,770 | |||
Goods in transit | 295,106 | 186,673 | |||
Obsolescence allowance (Note 19) | (36,197 | ) | (33,433 | ) | |
Inventories, net | 2,550,930 | 1,647,869 |