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