The main segment of the Group’s operations is the provision of comprehensive services in the field of railway infrastructure construction, which accounts for approx. 83,8% of sales revenue in 2022 (approx. 88,8% in 2021). The main recipient of services in this area is PKP PLK [Polish State Railways], an entity responsible by law for railway infrastructure management in Poland. In 2022, sales to PKP PLK amounted to approximately PLN 0,83 billion, which represented approximately 77,1% of total sales (in 2021 respectively – PLN 0,92 billion, approx. 82,3% of total sales).