positively. On the variable cost side, apart from normal inflation, as highlighted since Q2 fuel prices have increased versus the same period in 2017. The latest fuel shipment in December was more economical
, and also economical and financial engineering; and also to operate a business in improving projects that are relating or affecting natural resources and environment, either water, land, air, noise, or
, mechanical engineering, mining engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in improving projects that are
engineering, survey engineering, mechanical engineering, mining engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in
engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in improving projects that are relating or affecting natural resources