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. 94,5% of sales revenue in 2020 (approx. 97,3% in 2019). 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 2020, sales to PKP PLK amounted to approximately PLN 1,19 billion, which represented approximately 85,4% of total sales (in 2019 respectively – PLN 1,34 billion, approx. 85,7% of total sales).