If we accept the costs of any material until it enters the warehouse as the purchasing cost, we can calculate the inventory costs starting from the warehouse entry costs, over the costs that will occur until the time it is put into production.

The war between Russia and Ukraine caused an increase in aluminum prices, as in many commodity prices.  Russia is one of the world's major aluminum producers.  With the war;  Many countries, especially the USA, the EU and the UK, began to impose economic sanctions against Russia.

Encapsulant material is one of the important components of solar panel production. It is used with lamination between the cell and the glass. LG Chemical, Exxon Mobil Chemical, Dow Chemical, Mitsui Chemical, Sabic Sk Nexlene and Borealis are important poe raw material producers.