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