In 2004 ZSK completed for the NDI SA company structured cabling system in the building of the Sheraton Hotel in Krakow.

In 2008, we made a low-current installations in the building of the III Campus of the Jagiellonian University - WZiS. The General Contractor was the Budostal-2 company.

To the end of June 2012 the ZSK company completed a comprehensive electrical installations on-site in RCOS  building in Dobczyce, for the amount of over 2,4 million PLN

In 2007 in the building of the Auditorium Maximum of the Jagiellonian University we carried out comprehensive wireless network installations throughout the whole building as well as videoconferencing system for auditorium halls.

We have performed construction works in the area of electrical installations, telecommunication installations, installation of video intercom, access control, CCTV, fire alarm system, staircases smoke venting installation, at the Eskadra housing estate, Dywizjonu 303 street in Warsaw. The total value of the performed works exceeded 3.5 million PLN gross. The General contractor of the investment was MAL-BUD-1, the professional construction company.

In 2007, we completed investment in Cracow University of Technology in the DS 4 BALLOON building concerning the implementation of internal electrical and low current installations. The value of the performed work exceeded  3 million PLN.

At the Kraków's Old Town we completed an investments in the Wyspiański 2000 Pavilion as part of the investment performed in 2007. Low current comprehensive installations were completed. The building main functions are exhibition and tourist information center.

In 2008 the consortium of: ZSK Ltd and Skobud Ltd, completed the modernization project of the international border crossing and adaptation of the Passenger Terminal of the Balice International Airport to the provisions of the Schengen Pact.

In 2007 the works in the Royal Castle in Niepołomice were completed. We performed a comprehensive: structured cabling, installation of TV system for the hotel, automatic air conditioning and ventilation system, access control and locking mobile phones systems.