Construction of MPS-1 and MPS-2 Poznan Krzesiny Łódź Chojnywater pumping station Expansion of the siding railway station in TP No. 74 in Ostrów Wielkopolski Expansion of the existing plant repair rolling stock - implementation of stage II of the investment in Libiszów Modernization of the railway line Warsaw - Lodz stage II Construction of the MPS Depot for the F-16 Construction of the PTA installation in Włocławek Construction of the Track System Kozienice Power Plant with the SRK system and the power industry Modernization of the railway line Lodz - Warsaw HDD drilling under the Vistula River Construction of the overhead line 110KV Koluszki - Brzeziny Warsaw Metro Construction of the Oil Terminal in Gdansk Construction of the E75 Rail Baltica railway line Warsaw - Bialystok Construction of a reservoir park at OLPP Koluszki Construction of the South Hospital in Warsaw Construction of the hallŁódź Agglomeration Railway HDPE PKN Orlen SA in Płock Construction of approach lights Rzeszów Jasionka CERTIFICATES