DEZA,a.s. is a sole processor of crude benzol and tar, developing as by-products in the process of making coke from coal. With its capacity of 150,000 tones raw benzol and 400,000 tones raw tar processed annually, DEZA,a.s. is among the large enterprises in its business area. This size enables to achieve economies of scale in processing the raw materials and to enhance efficacy through the continuity of processes.