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