For almost 40 years, SWS has been leading the Civil Engineering sector. SWS has 17 offices worldwide, 3 trademarks, 5 patents ... and copyrights, and has engineered 1300+ km of railways, 650+ km of tunnels, 1900+ km roads, 3 mln sqm of buildings and dams for 5300+ mw of hydro energy, but is in Tunnelling where SWS is the solution for most challenging works. read more