Národná diaľničná spoločnosť, a. s.
Tunel Sitina, Tunnel, 2008-2011 Enduser: NDS a.s., Slovakia Customer: Profi Elektro s.r.o. Country: Slovak Republic Project description: Control system maintenance Project HW / SW: PLC Siemens S7-400 Project details: SW & HW maintenance, 24 hours standby on-call service

