Olli-Heikki Kyllönen

Nk Cables Ltd. provides wireless network services. The private company is based in Hyvinkaa, Finland.

Aro Systems Oy provides electrical and HVAC project and technical building services. The company is based in Helsinki, Finland. The Finnish company was founded in 1954 by Pentti Aro. The CEO is Mika Huovinen.

Nokia Kaapeli Oy is a Finnish company that manufactures data cables. The private company is based in Helsinki, Finland.

Sähkö- ja teleurakoitsijaliitto STUL ry is a Finnish organization that promotes the building technology industry, produces information, and protects the interests of its members. The private company is based in Espoo, Finland. The organization provides information about electrical and telecommunication contracting, expertise, and the benefits of membership in the union through its member presentations video series.

Vastuu Group Oy helps companies ensure their compliance with legal obligations. The company is based in Espoo, Finland and has subsidiaries in Finland. The Finnish company also provides business information for individuals to make informed purchasing decisions through their free Zeckit service. Vastuu Group was founded in 2010 and the CEO is Lars Albäck.