Sigma Hellas Ltd
 : Industrial automation, environmental protection instruments, water & wastewater equipment and services, portable measuring instruments, energy management.
http://www.sigmahellas.gr/
Signal Electronics Security SA
: Distributors of electronics security cctv and alarm systems.
http://www.signalsecurity.gr
Starsat
: High technology electronic services company. Dealing in digital receivers, computers and other electronic devices, located in Agios Dimitrios, Kalamaki, Greece.
http://www.servicetv.gr
Unishop
: Electrical supplies and service stores in Thessaloniki.
http://www.unishop.gr
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