9. Materials and consumables used

Raw materials and consumables used comprised the following:

The raw materials and consumables used led to an increased ratio of 45,8% (2020: 43,8%). In relation to the total value (sum of revenues, own work capitalized and variance of stock), raw materials and consumables used also increased with a ratio of 44,9% compared to prior year’s ratio (2020: 43,8%).

The main reasons for this development are the ongoing limited shortage of raw materials worldwide as well as delivery delays and a resulting increase in material prices, which could not be fully passed on to customers in 2021.

Furthermore, the significantly higher value for variance of stock compared with the previous year also had an increasing impact on material costs.