The secret of the highest quality Olczyk pellets is the appropriately selected production technology and a reliable source of material. 100% of coniferous wood in the form of pine, larch, fir and spruce is treated with barking, so that the chips and sawdust used for the production of pellets do not contain bark, which may contain mineral impurities, such as sand. Getting rid of the bark is one of the decisive factors affecting the ash content in pellets and failure-free operation of the central heating boiler